2 * Copyright (c) 2009, Pyun YongHyeon <yongari@FreeBSD.org>
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice unmodified, this list of conditions, and the following
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
27 * $FreeBSD: src/sys/dev/alc/if_alc.c,v 1.6 2009/09/29 23:03:16 yongari Exp $
30 /* Driver for Atheros AR8131/AR8132 PCIe Ethernet. */
32 #include <sys/param.h>
33 #include <sys/bitops.h>
34 #include <sys/endian.h>
35 #include <sys/kernel.h>
37 #include <sys/interrupt.h>
38 #include <sys/malloc.h>
41 #include <sys/serialize.h>
42 #include <sys/socket.h>
43 #include <sys/sockio.h>
44 #include <sys/sysctl.h>
45 #include <sys/in_cksum.h>
47 #include <net/ethernet.h>
50 #include <net/if_arp.h>
51 #include <net/if_dl.h>
52 #include <net/if_media.h>
53 #include <net/ifq_var.h>
54 #include <net/vlan/if_vlan_var.h>
55 #include <net/vlan/if_vlan_ether.h>
57 #include <netinet/ip.h>
58 #include <netinet/tcp.h>
60 #include <dev/netif/mii_layer/mii.h>
61 #include <dev/netif/mii_layer/miivar.h>
63 #include <bus/pci/pcireg.h>
64 #include <bus/pci/pcivar.h>
67 #include <dev/netif/alc/if_alcreg.h>
68 #include <dev/netif/alc/if_alcvar.h>
70 /* "device miibus" required. See GENERIC if you get errors here. */
71 #include "miibus_if.h"
73 #undef ALC_USE_CUSTOM_CSUM
74 #ifdef ALC_USE_CUSTOM_CSUM
75 #define ALC_CSUM_FEATURES (CSUM_TCP | CSUM_UDP)
77 #define ALC_CSUM_FEATURES (CSUM_IP | CSUM_TCP | CSUM_UDP)
81 #define ALC_UNLOCK(sc)
82 #define ALC_LOCK_ASSERT(sc)
84 #define PCIER_LINK_CAP PCIER_LINKCAP
85 #define PCIEM_LINK_CAP_ASPM PCIEM_LNKCAP_ASPM_MASK
86 #define PCIER_LINK_CTL PCIER_LINKCTRL
87 #define PCIEM_LINK_CTL_RCB PCIEM_LNKCTL_RCB
88 #define PCIEM_LINK_CTL_ASPMC PCIEM_LNKCTL_ASPM_MASK
89 #define PCIEM_LINK_CTL_ASPMC_L0S PCIEM_LNKCTL_ASPM_L0S
90 #define PCIEM_LINK_CTL_ASPMC_L1 PCIEM_LNKCTL_ASPM_L1
91 #define PCIEM_LINK_CTL_EXTENDED_SYNC PCIEM_LNKCTL_EXTENDED_SYNC
92 #define PCIER_DEVICE_CTL PCIER_DEVCTRL
93 #define PCIEM_CTL_MAX_READ_REQUEST PCIEM_DEVCTL_MAX_READRQ_MASK
94 #define PCIEM_CTL_MAX_PAYLOAD PCIEM_DEVCTL_MAX_PAYLOAD_MASK
97 static int alc_msi_enable = 1;
98 TUNABLE_INT("hw.alc.msi.enable", &alc_msi_enable);
101 * Devices supported by this driver.
104 static struct alc_ident alc_ident_table[] = {
105 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8131, 9 * 1024,
106 "Atheros AR8131 PCIe Gigabit Ethernet" },
107 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8132, 9 * 1024,
108 "Atheros AR8132 PCIe Fast Ethernet" },
109 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151, 6 * 1024,
110 "Atheros AR8151 v1.0 PCIe Gigabit Ethernet" },
111 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8151_V2, 6 * 1024,
112 "Atheros AR8151 v2.0 PCIe Gigabit Ethernet" },
113 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B, 6 * 1024,
114 "Atheros AR8152 v1.1 PCIe Fast Ethernet" },
115 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8152_B2, 6 * 1024,
116 "Atheros AR8152 v2.0 PCIe Fast Ethernet" },
117 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8161, 9 * 1024,
118 "Atheros AR8161 PCIe Gigabit Ethernet" },
119 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8162, 9 * 1024,
120 "Atheros AR8161 PCIe Fast Ethernet" },
121 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8171, 9 * 1024,
122 "Atheros AR8161 PCIe Gigabit Ethernet" },
123 { VENDORID_ATHEROS, DEVICEID_ATHEROS_AR8172, 9 * 1024,
124 "Atheros AR8161 PCIe Fast Ethernet" },
125 { VENDORID_ATHEROS, DEVICEID_ATHEROS_E2200, 9 * 1024,
126 "Killer E2200 Gigabit Ethernet" },
130 static int alc_attach(device_t);
131 static int alc_probe(device_t);
132 static int alc_detach(device_t);
133 static int alc_shutdown(device_t);
134 static int alc_suspend(device_t);
135 static int alc_resume(device_t);
136 static int alc_miibus_readreg(device_t, int, int);
137 static void alc_miibus_statchg(device_t);
138 static int alc_miibus_writereg(device_t, int, int, int);
139 static uint32_t alc_miidbg_readreg(struct alc_softc *, int);
140 static uint32_t alc_miidbg_writereg(struct alc_softc *, int, int);
141 static uint32_t alc_miiext_readreg(struct alc_softc *, int, int);
142 static uint32_t alc_miiext_writereg(struct alc_softc *, int, int, int);
143 static void alc_init(void *);
144 static void alc_start(struct ifnet *, struct ifaltq_subque *);
145 static void alc_watchdog(struct alc_softc *);
146 static int alc_mediachange(struct ifnet *);
147 static int alc_mediachange_locked(struct alc_softc *);
148 static void alc_mediastatus(struct ifnet *, struct ifmediareq *);
149 static int alc_ioctl(struct ifnet *, u_long, caddr_t, struct ucred *);
151 static void alc_aspm(struct alc_softc *, int, int);
152 static void alc_aspm_813x(struct alc_softc *, int);
153 static void alc_aspm_816x(struct alc_softc *, int);
155 static int alc_check_boundary(struct alc_softc *);
157 static void alc_config_msi(struct alc_softc *);
158 static void alc_disable_l0s_l1(struct alc_softc *);
159 static int alc_dma_alloc(struct alc_softc *);
160 static void alc_dma_free(struct alc_softc *);
161 static void alc_dmamap_cb(void *, bus_dma_segment_t *, int, int);
162 static void alc_dsp_fixup(struct alc_softc *, int);
163 static int alc_encap(struct alc_softc *, struct mbuf **);
164 static struct alc_ident *alc_find_ident(device_t);
165 static void alc_get_macaddr(struct alc_softc *);
166 static void alc_get_macaddr_813x(struct alc_softc *);
167 static void alc_get_macaddr_816x(struct alc_softc *);
168 static void alc_get_macaddr_par(struct alc_softc *);
169 static void alc_init_cmb(struct alc_softc *);
170 static void alc_init_rr_ring(struct alc_softc *);
171 static int alc_init_rx_ring(struct alc_softc *);
172 static void alc_init_smb(struct alc_softc *);
173 static void alc_init_tx_ring(struct alc_softc *);
174 static void alc_intr(void *);
175 static void alc_mac_config(struct alc_softc *);
176 static uint32_t alc_mii_readreg_813x(struct alc_softc *, int, int);
177 static uint32_t alc_mii_readreg_816x(struct alc_softc *, int, int);
178 static uint32_t alc_mii_writereg_813x(struct alc_softc *, int, int, int);
179 static uint32_t alc_mii_writereg_816x(struct alc_softc *, int, int, int);
180 static int alc_newbuf(struct alc_softc *, struct alc_rxdesc *, boolean_t);
181 static void alc_osc_reset(struct alc_softc *);
182 static void alc_phy_down(struct alc_softc *);
183 static void alc_phy_reset(struct alc_softc *);
184 static void alc_phy_reset_813x(struct alc_softc *);
185 static void alc_phy_reset_816x(struct alc_softc *);
186 static void alc_reset(struct alc_softc *);
187 static void alc_rxeof(struct alc_softc *, struct rx_rdesc *);
188 static int alc_rxintr(struct alc_softc *);
189 static void alc_rxfilter(struct alc_softc *);
190 static void alc_rxvlan(struct alc_softc *);
192 static void alc_setlinkspeed(struct alc_softc *);
194 static void alc_setwol(struct alc_softc *);
195 static void alc_setwol_813x(struct alc_softc *);
196 static void alc_setwol_816x(struct alc_softc *);
198 static void alc_start_queue(struct alc_softc *);
199 static void alc_stats_clear(struct alc_softc *);
200 static void alc_stats_update(struct alc_softc *);
201 static void alc_stop(struct alc_softc *);
202 static void alc_stop_mac(struct alc_softc *);
203 static void alc_stop_queue(struct alc_softc *);
204 static void alc_sysctl_node(struct alc_softc *);
205 static void alc_tick(void *);
206 static void alc_txeof(struct alc_softc *);
207 static int sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS);
208 static int sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS);
210 static device_method_t alc_methods[] = {
211 /* Device interface. */
212 DEVMETHOD(device_probe, alc_probe),
213 DEVMETHOD(device_attach, alc_attach),
214 DEVMETHOD(device_detach, alc_detach),
215 DEVMETHOD(device_shutdown, alc_shutdown),
216 DEVMETHOD(device_suspend, alc_suspend),
217 DEVMETHOD(device_resume, alc_resume),
220 DEVMETHOD(miibus_readreg, alc_miibus_readreg),
221 DEVMETHOD(miibus_writereg, alc_miibus_writereg),
222 DEVMETHOD(miibus_statchg, alc_miibus_statchg),
227 static DEFINE_CLASS_0(alc, alc_driver, alc_methods, sizeof(struct alc_softc));
228 static devclass_t alc_devclass;
230 DECLARE_DUMMY_MODULE(if_alc);
231 DRIVER_MODULE(if_alc, pci, alc_driver, alc_devclass, NULL, NULL);
232 DRIVER_MODULE(miibus, alc, miibus_driver, miibus_devclass, NULL, NULL);
234 static const uint32_t alc_dma_burst[] = { 128, 256, 512, 1024, 2048, 4096, 0 };
237 alc_miibus_readreg(device_t dev, int phy, int reg)
239 struct alc_softc *sc;
242 sc = device_get_softc(dev);
243 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
244 v = alc_mii_readreg_816x(sc, phy, reg);
246 v = alc_mii_readreg_813x(sc, phy, reg);
251 alc_mii_readreg_813x(struct alc_softc *sc, int phy, int reg)
257 * For AR8132 fast ethernet controller, do not report 1000baseT
258 * capability to mii(4). Even though AR8132 uses the same
259 * model/revision number of F1 gigabit PHY, the PHY has no
260 * ability to establish 1000baseT link.
262 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0 &&
266 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
267 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
268 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
270 v = CSR_READ_4(sc, ALC_MDIO);
271 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
276 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
280 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
284 alc_mii_readreg_816x(struct alc_softc *sc, int phy, int reg)
289 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
290 clk = MDIO_CLK_25_128;
293 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
294 MDIO_SUP_PREAMBLE | clk | MDIO_REG_ADDR(reg));
295 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
297 v = CSR_READ_4(sc, ALC_MDIO);
298 if ((v & MDIO_OP_BUSY) == 0)
303 device_printf(sc->alc_dev, "phy read timeout : %d\n", reg);
307 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
311 alc_miibus_writereg(device_t dev, int phy, int reg, int val)
313 struct alc_softc *sc;
316 sc = device_get_softc(dev);
317 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
318 v = alc_mii_writereg_816x(sc, phy, reg, val);
320 v = alc_mii_writereg_813x(sc, phy, reg, val);
325 alc_mii_writereg_813x(struct alc_softc *sc, int phy, int reg, int val)
330 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
331 (val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT |
332 MDIO_SUP_PREAMBLE | MDIO_CLK_25_4 | MDIO_REG_ADDR(reg));
333 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
335 v = CSR_READ_4(sc, ALC_MDIO);
336 if ((v & (MDIO_OP_EXECUTE | MDIO_OP_BUSY)) == 0)
341 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
347 alc_mii_writereg_816x(struct alc_softc *sc, int phy, int reg, int val)
352 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
353 clk = MDIO_CLK_25_128;
356 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
357 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) | MDIO_REG_ADDR(reg) |
358 MDIO_SUP_PREAMBLE | clk);
359 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
361 v = CSR_READ_4(sc, ALC_MDIO);
362 if ((v & MDIO_OP_BUSY) == 0)
367 device_printf(sc->alc_dev, "phy write timeout : %d\n", reg);
373 alc_miibus_statchg(device_t dev)
375 struct alc_softc *sc;
376 struct mii_data *mii;
380 sc = device_get_softc(dev);
382 mii = device_get_softc(sc->alc_miibus);
384 if (mii == NULL || ifp == NULL ||
385 (ifp->if_flags & IFF_RUNNING) == 0)
388 sc->alc_flags &= ~ALC_FLAG_LINK;
389 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
390 (IFM_ACTIVE | IFM_AVALID)) {
391 switch (IFM_SUBTYPE(mii->mii_media_active)) {
394 sc->alc_flags |= ALC_FLAG_LINK;
397 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
398 sc->alc_flags |= ALC_FLAG_LINK;
404 /* Stop Rx/Tx MACs. */
407 /* Program MACs with resolved speed/duplex/flow-control. */
408 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
411 /* Re-enable Tx/Rx MACs. */
412 reg = CSR_READ_4(sc, ALC_MAC_CFG);
413 reg |= MAC_CFG_TX_ENB | MAC_CFG_RX_ENB;
414 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
416 alc_aspm(sc, 0, IFM_SUBTYPE(mii->mii_media_active));
417 alc_dsp_fixup(sc, IFM_SUBTYPE(mii->mii_media_active));
421 alc_miidbg_readreg(struct alc_softc *sc, int reg)
424 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
426 return (alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
431 alc_miidbg_writereg(struct alc_softc *sc, int reg, int val)
434 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
436 return (alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
437 ALC_MII_DBG_DATA, val));
441 alc_miiext_readreg(struct alc_softc *sc, int devaddr, int reg)
446 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
447 EXT_MDIO_DEVADDR(devaddr));
448 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
449 clk = MDIO_CLK_25_128;
452 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_READ |
453 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
454 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
456 v = CSR_READ_4(sc, ALC_MDIO);
457 if ((v & MDIO_OP_BUSY) == 0)
462 device_printf(sc->alc_dev, "phy ext read timeout : %d, %d\n",
467 return ((v & MDIO_DATA_MASK) >> MDIO_DATA_SHIFT);
471 alc_miiext_writereg(struct alc_softc *sc, int devaddr, int reg, int val)
476 CSR_WRITE_4(sc, ALC_EXT_MDIO, EXT_MDIO_REG(reg) |
477 EXT_MDIO_DEVADDR(devaddr));
478 if ((sc->alc_flags & ALC_FLAG_LINK) != 0)
479 clk = MDIO_CLK_25_128;
482 CSR_WRITE_4(sc, ALC_MDIO, MDIO_OP_EXECUTE | MDIO_OP_WRITE |
483 ((val & MDIO_DATA_MASK) << MDIO_DATA_SHIFT) |
484 MDIO_SUP_PREAMBLE | clk | MDIO_MODE_EXT);
485 for (i = ALC_PHY_TIMEOUT; i > 0; i--) {
487 v = CSR_READ_4(sc, ALC_MDIO);
488 if ((v & MDIO_OP_BUSY) == 0)
493 device_printf(sc->alc_dev, "phy ext write timeout : %d, %d\n",
500 alc_dsp_fixup(struct alc_softc *sc, int media)
502 uint16_t agc, len, val;
504 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
506 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_C0)
511 * 1000BT/AZ, wrong cable length
513 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
514 len = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL6);
515 len = (len >> EXT_CLDCTL6_CAB_LEN_SHIFT) &
516 EXT_CLDCTL6_CAB_LEN_MASK;
517 agc = alc_miidbg_readreg(sc, MII_DBG_AGC);
518 agc = (agc >> DBG_AGC_2_VGA_SHIFT) & DBG_AGC_2_VGA_MASK;
519 if ((media == IFM_1000_T && len > EXT_CLDCTL6_CAB_LEN_SHORT1G &&
520 agc > DBG_AGC_LONG1G_LIMT) ||
521 (media == IFM_100_TX && len > DBG_AGC_LONG100M_LIMT &&
522 agc > DBG_AGC_LONG1G_LIMT)) {
523 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
524 DBG_AZ_ANADECT_LONG);
525 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
527 val |= ANEG_AFEE_10BT_100M_TH;
528 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
531 alc_miidbg_writereg(sc, MII_DBG_AZ_ANADECT,
532 DBG_AZ_ANADECT_DEFAULT);
533 val = alc_miiext_readreg(sc, MII_EXT_ANEG,
535 val &= ~ANEG_AFEE_10BT_100M_TH;
536 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE,
539 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
540 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
541 if (media == IFM_1000_T) {
543 * Giga link threshold, raise the tolerance of
546 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
547 val &= ~DBG_MSE20DB_TH_MASK;
548 val |= (DBG_MSE20DB_TH_HI <<
549 DBG_MSE20DB_TH_SHIFT);
550 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
551 } else if (media == IFM_100_TX)
552 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
556 val = alc_miiext_readreg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE);
557 val &= ~ANEG_AFEE_10BT_100M_TH;
558 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_AFE, val);
559 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0 &&
560 AR816X_REV(sc->alc_rev) == AR816X_REV_B0) {
561 alc_miidbg_writereg(sc, MII_DBG_MSE16DB,
563 val = alc_miidbg_readreg(sc, MII_DBG_MSE20DB);
564 val &= ~DBG_MSE20DB_TH_MASK;
565 val |= (DBG_MSE20DB_TH_DEFAULT << DBG_MSE20DB_TH_SHIFT);
566 alc_miidbg_writereg(sc, MII_DBG_MSE20DB, val);
572 alc_mediastatus(struct ifnet *ifp, struct ifmediareq *ifmr)
574 struct alc_softc *sc;
575 struct mii_data *mii;
578 if ((ifp->if_flags & IFF_UP) == 0) {
581 mii = device_get_softc(sc->alc_miibus);
584 ifmr->ifm_status = mii->mii_media_status;
585 ifmr->ifm_active = mii->mii_media_active;
589 alc_mediachange(struct ifnet *ifp)
591 struct alc_softc *sc;
596 error = alc_mediachange_locked(sc);
603 alc_mediachange_locked(struct alc_softc *sc)
605 struct mii_data *mii;
606 struct mii_softc *miisc;
611 mii = device_get_softc(sc->alc_miibus);
612 if (mii->mii_instance != 0) {
613 LIST_FOREACH(miisc, &mii->mii_phys, mii_list)
614 mii_phy_reset(miisc);
616 error = mii_mediachg(mii);
621 static struct alc_ident *
622 alc_find_ident(device_t dev)
624 struct alc_ident *ident;
625 uint16_t vendor, devid;
627 vendor = pci_get_vendor(dev);
628 devid = pci_get_device(dev);
629 for (ident = alc_ident_table; ident->name != NULL; ident++) {
630 if (vendor == ident->vendorid && devid == ident->deviceid)
638 alc_probe(device_t dev)
640 struct alc_ident *ident;
642 ident = alc_find_ident(dev);
644 device_set_desc(dev, ident->name);
645 return (BUS_PROBE_DEFAULT);
652 alc_get_macaddr(struct alc_softc *sc)
655 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
656 alc_get_macaddr_816x(sc);
658 alc_get_macaddr_813x(sc);
662 alc_get_macaddr_813x(struct alc_softc *sc)
669 opt = CSR_READ_4(sc, ALC_OPT_CFG);
670 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_OTP_SEL) != 0 &&
671 (CSR_READ_4(sc, ALC_TWSI_DEBUG) & TWSI_DEBUG_DEV_EXIST) != 0) {
673 * EEPROM found, let TWSI reload EEPROM configuration.
674 * This will set ethernet address of controller.
677 switch (sc->alc_ident->deviceid) {
678 case DEVICEID_ATHEROS_AR8131:
679 case DEVICEID_ATHEROS_AR8132:
680 if ((opt & OPT_CFG_CLK_ENB) == 0) {
681 opt |= OPT_CFG_CLK_ENB;
682 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
683 CSR_READ_4(sc, ALC_OPT_CFG);
687 case DEVICEID_ATHEROS_AR8151:
688 case DEVICEID_ATHEROS_AR8151_V2:
689 case DEVICEID_ATHEROS_AR8152_B:
690 case DEVICEID_ATHEROS_AR8152_B2:
691 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
692 ALC_MII_DBG_ADDR, 0x00);
693 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
695 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
696 ALC_MII_DBG_DATA, val & 0xFF7F);
697 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
698 ALC_MII_DBG_ADDR, 0x3B);
699 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
701 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
702 ALC_MII_DBG_DATA, val | 0x0008);
707 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
708 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
709 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
710 CSR_READ_4(sc, ALC_WOL_CFG);
712 CSR_WRITE_4(sc, ALC_TWSI_CFG, CSR_READ_4(sc, ALC_TWSI_CFG) |
713 TWSI_CFG_SW_LD_START);
714 for (i = 100; i > 0; i--) {
716 if ((CSR_READ_4(sc, ALC_TWSI_CFG) &
717 TWSI_CFG_SW_LD_START) == 0)
721 device_printf(sc->alc_dev,
722 "reloading EEPROM timeout!\n");
725 device_printf(sc->alc_dev, "EEPROM not found!\n");
728 switch (sc->alc_ident->deviceid) {
729 case DEVICEID_ATHEROS_AR8131:
730 case DEVICEID_ATHEROS_AR8132:
731 if ((opt & OPT_CFG_CLK_ENB) != 0) {
732 opt &= ~OPT_CFG_CLK_ENB;
733 CSR_WRITE_4(sc, ALC_OPT_CFG, opt);
734 CSR_READ_4(sc, ALC_OPT_CFG);
738 case DEVICEID_ATHEROS_AR8151:
739 case DEVICEID_ATHEROS_AR8151_V2:
740 case DEVICEID_ATHEROS_AR8152_B:
741 case DEVICEID_ATHEROS_AR8152_B2:
742 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
743 ALC_MII_DBG_ADDR, 0x00);
744 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
746 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
747 ALC_MII_DBG_DATA, val | 0x0080);
748 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
749 ALC_MII_DBG_ADDR, 0x3B);
750 val = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
752 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
753 ALC_MII_DBG_DATA, val & 0xFFF7);
759 alc_get_macaddr_par(sc);
763 alc_get_macaddr_816x(struct alc_softc *sc)
769 /* Try to reload station address via TWSI. */
770 for (i = 100; i > 0; i--) {
771 reg = CSR_READ_4(sc, ALC_SLD);
772 if ((reg & (SLD_PROGRESS | SLD_START)) == 0)
777 CSR_WRITE_4(sc, ALC_SLD, reg | SLD_START);
778 for (i = 100; i > 0; i--) {
780 reg = CSR_READ_4(sc, ALC_SLD);
781 if ((reg & SLD_START) == 0)
786 else if (bootverbose)
787 device_printf(sc->alc_dev,
788 "reloading station address via TWSI timed out!\n");
791 /* Try to reload station address from EEPROM or FLASH. */
793 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
794 if ((reg & (EEPROM_LD_EEPROM_EXIST |
795 EEPROM_LD_FLASH_EXIST)) != 0) {
796 for (i = 100; i > 0; i--) {
797 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
798 if ((reg & (EEPROM_LD_PROGRESS |
799 EEPROM_LD_START)) == 0)
804 CSR_WRITE_4(sc, ALC_EEPROM_LD, reg |
806 for (i = 100; i > 0; i--) {
808 reg = CSR_READ_4(sc, ALC_EEPROM_LD);
809 if ((reg & EEPROM_LD_START) == 0)
812 } else if (bootverbose)
813 device_printf(sc->alc_dev,
814 "reloading EEPROM/FLASH timed out!\n");
818 alc_get_macaddr_par(sc);
822 alc_get_macaddr_par(struct alc_softc *sc)
826 ea[0] = CSR_READ_4(sc, ALC_PAR0);
827 ea[1] = CSR_READ_4(sc, ALC_PAR1);
828 sc->alc_eaddr[0] = (ea[1] >> 8) & 0xFF;
829 sc->alc_eaddr[1] = (ea[1] >> 0) & 0xFF;
830 sc->alc_eaddr[2] = (ea[0] >> 24) & 0xFF;
831 sc->alc_eaddr[3] = (ea[0] >> 16) & 0xFF;
832 sc->alc_eaddr[4] = (ea[0] >> 8) & 0xFF;
833 sc->alc_eaddr[5] = (ea[0] >> 0) & 0xFF;
837 alc_disable_l0s_l1(struct alc_softc *sc)
841 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
842 /* Another magic from vendor. */
843 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
844 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_CLK_SWH_L1 |
845 PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
846 PM_CFG_MAC_ASPM_CHK | PM_CFG_SERDES_PD_EX_L1);
847 pmcfg |= PM_CFG_SERDES_BUDS_RX_L1_ENB |
848 PM_CFG_SERDES_PLL_L1_ENB | PM_CFG_SERDES_L1_ENB;
849 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
854 alc_phy_reset(struct alc_softc *sc)
857 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
858 alc_phy_reset_816x(sc);
860 alc_phy_reset_813x(sc);
864 alc_phy_reset_813x(struct alc_softc *sc)
868 /* Reset magic from Linux. */
869 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_SEL_ANA_RESET);
870 CSR_READ_2(sc, ALC_GPHY_CFG);
873 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
874 GPHY_CFG_SEL_ANA_RESET);
875 CSR_READ_2(sc, ALC_GPHY_CFG);
878 /* DSP fixup, Vendor magic. */
879 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
880 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
881 ALC_MII_DBG_ADDR, 0x000A);
882 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
884 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
885 ALC_MII_DBG_DATA, data & 0xDFFF);
887 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
888 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
889 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
890 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
891 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
892 ALC_MII_DBG_ADDR, 0x003B);
893 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
895 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
896 ALC_MII_DBG_DATA, data & 0xFFF7);
899 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151) {
900 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
901 ALC_MII_DBG_ADDR, 0x0029);
902 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
903 ALC_MII_DBG_DATA, 0x929D);
905 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
906 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132 ||
907 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
908 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
909 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
910 ALC_MII_DBG_ADDR, 0x0029);
911 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
912 ALC_MII_DBG_DATA, 0xB6DD);
915 /* Load DSP codes, vendor magic. */
916 data = ANA_LOOP_SEL_10BT | ANA_EN_MASK_TB | ANA_EN_10BT_IDLE |
917 ((1 << ANA_INTERVAL_SEL_TIMER_SHIFT) & ANA_INTERVAL_SEL_TIMER_MASK);
918 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
919 ALC_MII_DBG_ADDR, MII_ANA_CFG18);
920 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
921 ALC_MII_DBG_DATA, data);
923 data = ((2 << ANA_SERDES_CDR_BW_SHIFT) & ANA_SERDES_CDR_BW_MASK) |
924 ANA_SERDES_EN_DEEM | ANA_SERDES_SEL_HSP | ANA_SERDES_EN_PLL |
926 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
927 ALC_MII_DBG_ADDR, MII_ANA_CFG5);
928 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
929 ALC_MII_DBG_DATA, data);
931 data = ((44 << ANA_LONG_CABLE_TH_100_SHIFT) &
932 ANA_LONG_CABLE_TH_100_MASK) |
933 ((33 << ANA_SHORT_CABLE_TH_100_SHIFT) &
934 ANA_SHORT_CABLE_TH_100_SHIFT) |
935 ANA_BP_BAD_LINK_ACCUM | ANA_BP_SMALL_BW;
936 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
937 ALC_MII_DBG_ADDR, MII_ANA_CFG54);
938 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
939 ALC_MII_DBG_DATA, data);
941 data = ((11 << ANA_IECHO_ADJ_3_SHIFT) & ANA_IECHO_ADJ_3_MASK) |
942 ((11 << ANA_IECHO_ADJ_2_SHIFT) & ANA_IECHO_ADJ_2_MASK) |
943 ((8 << ANA_IECHO_ADJ_1_SHIFT) & ANA_IECHO_ADJ_1_MASK) |
944 ((8 << ANA_IECHO_ADJ_0_SHIFT) & ANA_IECHO_ADJ_0_MASK);
945 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
946 ALC_MII_DBG_ADDR, MII_ANA_CFG4);
947 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
948 ALC_MII_DBG_DATA, data);
950 data = ((7 & ANA_MANUL_SWICH_ON_SHIFT) & ANA_MANUL_SWICH_ON_MASK) |
951 ANA_RESTART_CAL | ANA_MAN_ENABLE | ANA_SEL_HSP | ANA_EN_HB |
953 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
954 ALC_MII_DBG_ADDR, MII_ANA_CFG0);
955 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
956 ALC_MII_DBG_DATA, data);
959 /* Disable hibernation. */
960 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
962 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
965 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
968 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_ADDR,
970 data = alc_miibus_readreg(sc->alc_dev, sc->alc_phyaddr,
973 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, ALC_MII_DBG_DATA,
978 alc_phy_reset_816x(struct alc_softc *sc)
982 val = CSR_READ_4(sc, ALC_GPHY_CFG);
983 val &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
984 GPHY_CFG_GATE_25M_ENB | GPHY_CFG_PHY_IDDQ | GPHY_CFG_PHY_PLL_ON |
985 GPHY_CFG_PWDOWN_HW | GPHY_CFG_100AB_ENB);
986 val |= GPHY_CFG_SEL_ANA_RESET;
988 val |= GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN | GPHY_CFG_SEL_ANA_RESET;
990 /* Disable PHY hibernation. */
991 val &= ~(GPHY_CFG_HIB_PULSE | GPHY_CFG_HIB_EN);
993 CSR_WRITE_4(sc, ALC_GPHY_CFG, val);
995 CSR_WRITE_4(sc, ALC_GPHY_CFG, val | GPHY_CFG_EXT_RESET);
998 /* Vendor PHY magic. */
1000 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS, DBG_LEGCYPS_DEFAULT);
1001 alc_miidbg_writereg(sc, MII_DBG_SYSMODCTL, DBG_SYSMODCTL_DEFAULT);
1002 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_VDRVBIAS,
1003 EXT_VDRVBIAS_DEFAULT);
1005 /* Disable PHY hibernation. */
1006 alc_miidbg_writereg(sc, MII_DBG_LEGCYPS,
1007 DBG_LEGCYPS_DEFAULT & ~DBG_LEGCYPS_ENB);
1008 alc_miidbg_writereg(sc, MII_DBG_HIBNEG,
1009 DBG_HIBNEG_DEFAULT & ~(DBG_HIBNEG_PSHIB_EN | DBG_HIBNEG_HIB_PULSE));
1010 alc_miidbg_writereg(sc, MII_DBG_GREENCFG, DBG_GREENCFG_DEFAULT);
1013 /* XXX Disable EEE. */
1014 val = CSR_READ_4(sc, ALC_LPI_CTL);
1015 val &= ~LPI_CTL_ENB;
1016 CSR_WRITE_4(sc, ALC_LPI_CTL, val);
1017 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_LOCAL_EEEADV, 0);
1019 /* PHY power saving. */
1020 alc_miidbg_writereg(sc, MII_DBG_TST10BTCFG, DBG_TST10BTCFG_DEFAULT);
1021 alc_miidbg_writereg(sc, MII_DBG_SRDSYSMOD, DBG_SRDSYSMOD_DEFAULT);
1022 alc_miidbg_writereg(sc, MII_DBG_TST100BTCFG, DBG_TST100BTCFG_DEFAULT);
1023 alc_miidbg_writereg(sc, MII_DBG_ANACTL, DBG_ANACTL_DEFAULT);
1024 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1025 val &= ~DBG_GREENCFG2_GATE_DFSE_EN;
1026 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1028 /* RTL8139C, 120m issue. */
1029 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_NLP78,
1030 ANEG_NLP78_120M_DEFAULT);
1031 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
1032 ANEG_S3DIG10_DEFAULT);
1034 if ((sc->alc_flags & ALC_FLAG_LINK_WAR) != 0) {
1035 /* Turn off half amplitude. */
1036 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3);
1037 val |= EXT_CLDCTL3_BP_CABLE1TH_DET_GT;
1038 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL3, val);
1039 /* Turn off Green feature. */
1040 val = alc_miidbg_readreg(sc, MII_DBG_GREENCFG2);
1041 val |= DBG_GREENCFG2_BP_GREEN;
1042 alc_miidbg_writereg(sc, MII_DBG_GREENCFG2, val);
1043 /* Turn off half bias. */
1044 val = alc_miiext_readreg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5);
1045 val |= EXT_CLDCTL5_BP_VD_HLFBIAS;
1046 alc_miiext_writereg(sc, MII_EXT_PCS, MII_EXT_CLDCTL5, val);
1051 alc_phy_down(struct alc_softc *sc)
1055 switch (sc->alc_ident->deviceid) {
1056 case DEVICEID_ATHEROS_AR8161:
1057 case DEVICEID_ATHEROS_E2200:
1058 case DEVICEID_ATHEROS_AR8162:
1059 case DEVICEID_ATHEROS_AR8171:
1060 case DEVICEID_ATHEROS_AR8172:
1061 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
1062 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE |
1063 GPHY_CFG_100AB_ENB | GPHY_CFG_PHY_PLL_ON);
1064 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE |
1065 GPHY_CFG_SEL_ANA_RESET;
1066 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
1067 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
1069 case DEVICEID_ATHEROS_AR8151:
1070 case DEVICEID_ATHEROS_AR8151_V2:
1071 case DEVICEID_ATHEROS_AR8152_B:
1072 case DEVICEID_ATHEROS_AR8152_B2:
1074 * GPHY power down caused more problems on AR8151 v2.0.
1075 * When driver is reloaded after GPHY power down,
1076 * accesses to PHY/MAC registers hung the system. Only
1077 * cold boot recovered from it. I'm not sure whether
1078 * AR8151 v1.0 also requires this one though. I don't
1079 * have AR8151 v1.0 controller in hand.
1080 * The only option left is to isolate the PHY and
1081 * initiates power down the PHY which in turn saves
1082 * more power when driver is unloaded.
1084 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
1085 MII_BMCR, BMCR_ISO | BMCR_PDOWN);
1088 /* Force PHY down. */
1089 CSR_WRITE_2(sc, ALC_GPHY_CFG, GPHY_CFG_EXT_RESET |
1090 GPHY_CFG_SEL_ANA_RESET | GPHY_CFG_PHY_IDDQ |
1091 GPHY_CFG_PWDOWN_HW);
1098 alc_aspm(struct alc_softc *sc, int init, int media)
1101 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1102 alc_aspm_816x(sc, init);
1104 alc_aspm_813x(sc, media);
1108 alc_aspm_813x(struct alc_softc *sc, int media)
1113 if ((sc->alc_flags & ALC_FLAG_LINK) == 0)
1116 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1117 if ((sc->alc_flags & (ALC_FLAG_APS | ALC_FLAG_PCIE)) ==
1118 (ALC_FLAG_APS | ALC_FLAG_PCIE))
1119 linkcfg = CSR_READ_2(sc, sc->alc_expcap +
1120 PCIR_EXPRESS_LINK_CTL);
1123 pmcfg &= ~PM_CFG_SERDES_PD_EX_L1;
1124 pmcfg &= ~(PM_CFG_L1_ENTRY_TIMER_MASK | PM_CFG_LCKDET_TIMER_MASK);
1125 pmcfg |= PM_CFG_MAC_ASPM_CHK;
1126 pmcfg |= (PM_CFG_LCKDET_TIMER_DEFAULT << PM_CFG_LCKDET_TIMER_SHIFT);
1127 pmcfg &= ~(PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1129 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1130 /* Disable extended sync except AR8152 B v1.0 */
1131 linkcfg &= ~PCIEM_LINK_CTL_EXTENDED_SYNC;
1132 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1133 sc->alc_rev == ATHEROS_AR8152_B_V10)
1134 linkcfg |= PCIEM_LINK_CTL_EXTENDED_SYNC;
1135 CSR_WRITE_2(sc, sc->alc_expcap + PCIER_LINK_CTL,
1137 pmcfg &= ~(PM_CFG_EN_BUFS_RX_L0S | PM_CFG_SA_DLY_ENB |
1139 pmcfg |= (PM_CFG_L1_ENTRY_TIMER_DEFAULT <<
1140 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1141 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1142 pmcfg |= (PM_CFG_PM_REQ_TIMER_DEFAULT <<
1143 PM_CFG_PM_REQ_TIMER_SHIFT);
1144 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_PCIE_RECV;
1147 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1148 if ((sc->alc_flags & ALC_FLAG_L0S) != 0)
1149 pmcfg |= PM_CFG_ASPM_L0S_ENB;
1150 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1151 pmcfg |= PM_CFG_ASPM_L1_ENB;
1152 if ((sc->alc_flags & ALC_FLAG_APS) != 0) {
1153 if (sc->alc_ident->deviceid ==
1154 DEVICEID_ATHEROS_AR8152_B)
1155 pmcfg &= ~PM_CFG_ASPM_L0S_ENB;
1156 pmcfg &= ~(PM_CFG_SERDES_L1_ENB |
1157 PM_CFG_SERDES_PLL_L1_ENB |
1158 PM_CFG_SERDES_BUDS_RX_L1_ENB);
1159 pmcfg |= PM_CFG_CLK_SWH_L1;
1160 if (media == IFM_100_TX || media == IFM_1000_T) {
1161 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_MASK;
1162 switch (sc->alc_ident->deviceid) {
1163 case DEVICEID_ATHEROS_AR8152_B:
1165 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1167 case DEVICEID_ATHEROS_AR8152_B2:
1168 case DEVICEID_ATHEROS_AR8151_V2:
1170 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1174 PM_CFG_L1_ENTRY_TIMER_SHIFT);
1179 pmcfg |= PM_CFG_SERDES_L1_ENB |
1180 PM_CFG_SERDES_PLL_L1_ENB |
1181 PM_CFG_SERDES_BUDS_RX_L1_ENB;
1182 pmcfg &= ~(PM_CFG_CLK_SWH_L1 |
1183 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB);
1186 pmcfg &= ~(PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SERDES_L1_ENB |
1187 PM_CFG_SERDES_PLL_L1_ENB);
1188 pmcfg |= PM_CFG_CLK_SWH_L1;
1189 if ((sc->alc_flags & ALC_FLAG_L1S) != 0)
1190 pmcfg |= PM_CFG_ASPM_L1_ENB;
1192 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1196 alc_aspm_816x(struct alc_softc *sc, int init)
1200 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
1201 pmcfg &= ~PM_CFG_L1_ENTRY_TIMER_816X_MASK;
1202 pmcfg |= PM_CFG_L1_ENTRY_TIMER_816X_DEFAULT;
1203 pmcfg &= ~PM_CFG_PM_REQ_TIMER_MASK;
1204 pmcfg |= PM_CFG_PM_REQ_TIMER_816X_DEFAULT;
1205 pmcfg &= ~PM_CFG_LCKDET_TIMER_MASK;
1206 pmcfg |= PM_CFG_LCKDET_TIMER_DEFAULT;
1207 pmcfg |= PM_CFG_SERDES_PD_EX_L1 | PM_CFG_CLK_SWH_L1 | PM_CFG_PCIE_RECV;
1208 pmcfg &= ~(PM_CFG_RX_L1_AFTER_L0S | PM_CFG_TX_L1_AFTER_L0S |
1209 PM_CFG_ASPM_L1_ENB | PM_CFG_ASPM_L0S_ENB |
1210 PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB |
1211 PM_CFG_SERDES_BUDS_RX_L1_ENB | PM_CFG_SA_DLY_ENB |
1212 PM_CFG_MAC_ASPM_CHK | PM_CFG_HOTRST);
1213 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1214 (sc->alc_rev & 0x01) != 0)
1215 pmcfg |= PM_CFG_SERDES_L1_ENB | PM_CFG_SERDES_PLL_L1_ENB;
1216 if ((sc->alc_flags & ALC_FLAG_LINK) != 0) {
1217 /* Link up, enable both L0s, L1s. */
1218 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1219 PM_CFG_MAC_ASPM_CHK;
1222 pmcfg |= PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB |
1223 PM_CFG_MAC_ASPM_CHK;
1224 else if ((sc->alc_ifp->if_flags & IFF_RUNNING) != 0)
1225 pmcfg |= PM_CFG_ASPM_L1_ENB | PM_CFG_MAC_ASPM_CHK;
1227 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
1231 alc_init_pcie(struct alc_softc *sc)
1233 const char *aspm_state[] = { "L0s/L1", "L0s", "L1", "L0s/L1" };
1234 uint32_t cap, ctl, val;
1237 /* Clear data link and flow-control protocol error. */
1238 val = CSR_READ_4(sc, ALC_PEX_UNC_ERR_SEV);
1239 val &= ~(PEX_UNC_ERR_SEV_DLP | PEX_UNC_ERR_SEV_FCP);
1240 CSR_WRITE_4(sc, ALC_PEX_UNC_ERR_SEV, val);
1242 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1243 CSR_WRITE_4(sc, ALC_LTSSM_ID_CFG,
1244 CSR_READ_4(sc, ALC_LTSSM_ID_CFG) & ~LTSSM_ID_WRO_ENB);
1245 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC,
1246 CSR_READ_4(sc, ALC_PCIE_PHYMISC) |
1247 PCIE_PHYMISC_FORCE_RCV_DET);
1248 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B &&
1249 sc->alc_rev == ATHEROS_AR8152_B_V10) {
1250 val = CSR_READ_4(sc, ALC_PCIE_PHYMISC2);
1251 val &= ~(PCIE_PHYMISC2_SERDES_CDR_MASK |
1252 PCIE_PHYMISC2_SERDES_TH_MASK);
1253 val |= 3 << PCIE_PHYMISC2_SERDES_CDR_SHIFT;
1254 val |= 3 << PCIE_PHYMISC2_SERDES_TH_SHIFT;
1255 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC2, val);
1257 /* Disable ASPM L0S and L1. */
1258 cap = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CAP);
1259 if ((cap & PCIEM_LINK_CAP_ASPM) != 0) {
1260 ctl = CSR_READ_2(sc, sc->alc_expcap + PCIER_LINK_CTL);
1261 if ((ctl & PCIEM_LINK_CTL_RCB) != 0)
1262 sc->alc_rcb = DMA_CFG_RCB_128;
1264 device_printf(sc->alc_dev, "RCB %u bytes\n",
1265 sc->alc_rcb == DMA_CFG_RCB_64 ? 64 : 128);
1266 state = ctl & PCIEM_LINK_CTL_ASPMC;
1267 if (state & PCIEM_LINK_CTL_ASPMC_L0S)
1268 sc->alc_flags |= ALC_FLAG_L0S;
1269 if (state & PCIEM_LINK_CTL_ASPMC_L1)
1270 sc->alc_flags |= ALC_FLAG_L1S;
1272 device_printf(sc->alc_dev, "ASPM %s %s\n",
1274 state == 0 ? "disabled" : "enabled");
1275 alc_disable_l0s_l1(sc);
1278 device_printf(sc->alc_dev,
1279 "no ASPM support\n");
1282 val = CSR_READ_4(sc, ALC_PDLL_TRNS1);
1283 val &= ~PDLL_TRNS1_D3PLLOFF_ENB;
1284 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, val);
1285 val = CSR_READ_4(sc, ALC_MASTER_CFG);
1286 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
1287 (sc->alc_rev & 0x01) != 0) {
1288 if ((val & MASTER_WAKEN_25M) == 0 ||
1289 (val & MASTER_CLK_SEL_DIS) == 0) {
1290 val |= MASTER_WAKEN_25M | MASTER_CLK_SEL_DIS;
1291 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1294 if ((val & MASTER_WAKEN_25M) == 0 ||
1295 (val & MASTER_CLK_SEL_DIS) != 0) {
1296 val |= MASTER_WAKEN_25M;
1297 val &= ~MASTER_CLK_SEL_DIS;
1298 CSR_WRITE_4(sc, ALC_MASTER_CFG, val);
1302 alc_aspm(sc, 1, IFM_UNKNOWN);
1306 alc_config_msi(struct alc_softc *sc)
1310 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
1312 * It seems interrupt moderation is controlled by
1313 * ALC_MSI_RETRANS_TIMER register if MSI/MSIX is active.
1314 * Driver uses RX interrupt moderation parameter to
1315 * program ALC_MSI_RETRANS_TIMER register.
1317 ctl = CSR_READ_4(sc, ALC_MSI_RETRANS_TIMER);
1318 ctl &= ~MSI_RETRANS_TIMER_MASK;
1319 ctl &= ~MSI_RETRANS_MASK_SEL_LINE;
1320 mod = ALC_USECS(sc->alc_int_rx_mod);
1324 if (sc->alc_irq_type == PCI_INTR_TYPE_MSI)
1325 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, ctl |
1326 MSI_RETRANS_MASK_SEL_LINE);
1328 CSR_WRITE_4(sc, ALC_MSI_RETRANS_TIMER, 0);
1333 alc_attach(device_t dev)
1335 struct alc_softc *sc;
1342 sc = device_get_softc(dev);
1344 sc->alc_rev = pci_get_revid(dev);
1346 callout_init_mp(&sc->alc_tick_ch);
1347 sc->alc_ident = alc_find_ident(dev);
1349 /* Enable bus mastering */
1350 pci_enable_busmaster(dev);
1352 /* Map the device. */
1353 sc->alc_res_rid = PCIR_BAR(0);
1354 sc->alc_res = bus_alloc_resource_any(dev, SYS_RES_MEMORY,
1355 &sc->alc_res_rid, RF_ACTIVE);
1357 device_printf(dev, "cannot allocate memory resources.\n");
1360 sc->alc_res_btag = rman_get_bustag(sc->alc_res);
1361 sc->alc_res_bhand = rman_get_bushandle(sc->alc_res);
1363 /* Set PHY address. */
1364 sc->alc_phyaddr = ALC_PHY_ADDR;
1367 * One odd thing is AR8132 uses the same PHY hardware(F1
1368 * gigabit PHY) of AR8131. So atphy(4) of AR8132 reports
1369 * the PHY supports 1000Mbps but that's not true. The PHY
1370 * used in AR8132 can't establish gigabit link even if it
1371 * shows the same PHY model/revision number of AR8131.
1373 switch (sc->alc_ident->deviceid) {
1374 case DEVICEID_ATHEROS_AR8161:
1375 if (pci_get_subvendor(dev) == VENDORID_ATHEROS &&
1376 pci_get_subdevice(dev) == 0x0091 && sc->alc_rev == 0)
1377 sc->alc_flags |= ALC_FLAG_LINK_WAR;
1379 case DEVICEID_ATHEROS_E2200:
1380 case DEVICEID_ATHEROS_AR8171:
1381 sc->alc_flags |= ALC_FLAG_AR816X_FAMILY;
1383 case DEVICEID_ATHEROS_AR8162:
1384 case DEVICEID_ATHEROS_AR8172:
1385 sc->alc_flags |= ALC_FLAG_FASTETHER | ALC_FLAG_AR816X_FAMILY;
1387 case DEVICEID_ATHEROS_AR8152_B:
1388 case DEVICEID_ATHEROS_AR8152_B2:
1389 sc->alc_flags |= ALC_FLAG_APS;
1391 case DEVICEID_ATHEROS_AR8132:
1392 sc->alc_flags |= ALC_FLAG_FASTETHER;
1394 case DEVICEID_ATHEROS_AR8151:
1395 case DEVICEID_ATHEROS_AR8151_V2:
1396 sc->alc_flags |= ALC_FLAG_APS;
1401 sc->alc_flags |= ALC_FLAG_JUMBO;
1404 * It seems that AR813x/AR815x has silicon bug for SMB. In
1405 * addition, Atheros said that enabling SMB wouldn't improve
1406 * performance. However I think it's bad to access lots of
1407 * registers to extract MAC statistics.
1409 sc->alc_flags |= ALC_FLAG_SMB_BUG;
1412 * Don't use Tx CMB. It is known to have silicon bug.
1414 sc->alc_flags |= ALC_FLAG_CMB_BUG;
1415 sc->alc_chip_rev = CSR_READ_4(sc, ALC_MASTER_CFG) >>
1416 MASTER_CHIP_REV_SHIFT;
1418 device_printf(dev, "PCI device revision : 0x%04x\n",
1420 device_printf(dev, "Chip id/revision : 0x%04x\n",
1422 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
1423 device_printf(dev, "AR816x revision : 0x%x\n",
1424 AR816X_REV(sc->alc_rev));
1426 device_printf(dev, "%u Tx FIFO, %u Rx FIFO\n",
1427 CSR_READ_4(sc, ALC_SRAM_TX_FIFO_LEN) * 8,
1428 CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN) * 8);
1430 /* Initialize DMA parameters. */
1431 sc->alc_dma_rd_burst = 0;
1432 sc->alc_dma_wr_burst = 0;
1433 sc->alc_rcb = DMA_CFG_RCB_64;
1434 if (pci_find_extcap(dev, PCIY_EXPRESS, &base) == 0) {
1435 sc->alc_flags |= ALC_FLAG_PCIE;
1436 sc->alc_expcap = base;
1437 burst = CSR_READ_2(sc, base + PCIER_DEVICE_CTL);
1438 sc->alc_dma_rd_burst =
1439 (burst & PCIEM_CTL_MAX_READ_REQUEST) >> 12;
1440 sc->alc_dma_wr_burst = (burst & PCIEM_CTL_MAX_PAYLOAD) >> 5;
1442 device_printf(dev, "Read request size : %u bytes.\n",
1443 alc_dma_burst[sc->alc_dma_rd_burst]);
1444 device_printf(dev, "TLP payload size : %u bytes.\n",
1445 alc_dma_burst[sc->alc_dma_wr_burst]);
1447 if (alc_dma_burst[sc->alc_dma_rd_burst] > 1024)
1448 sc->alc_dma_rd_burst = 3;
1449 if (alc_dma_burst[sc->alc_dma_wr_burst] > 1024)
1450 sc->alc_dma_wr_burst = 3;
1457 /* Reset the ethernet controller. */
1461 sc->alc_irq_type = pci_alloc_1intr(dev, alc_msi_enable,
1462 &sc->alc_irq_rid, &intr_flags);
1464 /* Allocate IRQ resources. */
1465 sc->alc_irq = bus_alloc_resource_any(dev, SYS_RES_IRQ,
1466 &sc->alc_irq_rid, intr_flags);
1468 device_printf(dev, "cannot allocate IRQ resources.\n");
1472 /* Create device sysctl node. */
1473 alc_sysctl_node(sc);
1475 if ((error = alc_dma_alloc(sc) != 0))
1478 /* Load station address. */
1479 alc_get_macaddr(sc);
1481 ifp = sc->alc_ifp = &sc->arpcom.ac_if;
1483 if_initname(ifp, device_get_name(dev), device_get_unit(dev));
1484 ifp->if_flags = IFF_BROADCAST | IFF_SIMPLEX | IFF_MULTICAST;
1485 ifp->if_ioctl = alc_ioctl;
1486 ifp->if_start = alc_start;
1487 ifp->if_init = alc_init;
1488 ifq_set_maxlen(&ifp->if_snd, ALC_TX_RING_CNT - 1);
1489 ifq_set_ready(&ifp->if_snd);
1490 ifp->if_capabilities = IFCAP_TXCSUM;
1491 ifp->if_hwassist = ALC_CSUM_FEATURES;
1494 if (pci_find_extcap(dev, PCIY_PMG, &pmc) == 0) {
1495 ifp->if_capabilities |= IFCAP_WOL_MAGIC | IFCAP_WOL_MCAST;
1496 sc->alc_flags |= ALC_FLAG_PM;
1497 sc->alc_pmcap = base;
1500 ifp->if_capenable = ifp->if_capabilities;
1502 /* VLAN capability setup. */
1503 ifp->if_capabilities |= IFCAP_VLAN_MTU;
1504 ifp->if_capabilities |= IFCAP_VLAN_HWTAGGING | IFCAP_VLAN_HWCSUM;
1505 ifp->if_capenable = ifp->if_capabilities;
1509 * It seems enabling Tx checksum offloading makes more trouble.
1510 * Sometimes the controller does not receive any frames when
1511 * Tx checksum offloading is enabled. I'm not sure whether this
1512 * is a bug in Tx checksum offloading logic or I got broken
1513 * sample boards. To safety, don't enable Tx checksum offloading
1514 * by default but give chance to users to toggle it if they know
1515 * their controllers work without problems.
1516 * Fortunately, Tx checksum offloading for AR816x family
1519 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
1520 ifp->if_capenable &= ~IFCAP_TXCSUM;
1521 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
1524 /* Set up MII bus. */
1525 if ((error = mii_phy_probe(dev, &sc->alc_miibus, alc_mediachange,
1526 alc_mediastatus)) != 0) {
1527 device_printf(dev, "no PHY found!\n");
1531 ether_ifattach(ifp, sc->alc_eaddr, NULL);
1533 /* Tell the upper layer(s) we support long frames. */
1534 ifp->if_data.ifi_hdrlen = sizeof(struct ether_vlan_header);
1536 ifq_set_cpuid(&ifp->if_snd, rman_get_cpuid(sc->alc_irq));
1538 /* Create local taskq. */
1539 TASK_INIT(&sc->alc_tx_task, 1, alc_tx_task, ifp);
1540 sc->alc_tq = taskqueue_create("alc_taskq", M_WAITOK,
1541 taskqueue_thread_enqueue, &sc->alc_tq);
1542 if (sc->alc_tq == NULL) {
1543 device_printf(dev, "could not create taskqueue.\n");
1544 ether_ifdetach(ifp);
1548 taskqueue_start_threads(&sc->alc_tq, 1, TDPRI_KERN_DAEMON, -1, "%s taskq",
1549 device_get_nameunit(sc->alc_dev));
1552 if ((sc->alc_flags & ALC_FLAG_MSIX) != 0)
1553 msic = ALC_MSIX_MESSAGES;
1554 else if ((sc->alc_flags & ALC_FLAG_MSI) != 0)
1555 msic = ALC_MSI_MESSAGES;
1558 for (i = 0; i < msic; i++) {
1559 error = bus_setup_intr(dev, sc->alc_irq[i], INTR_MPSAFE,
1561 &sc->alc_intrhand[i], NULL);
1566 device_printf(dev, "could not set up interrupt handler.\n");
1567 taskqueue_free(sc->alc_tq);
1569 ether_ifdetach(ifp);
1574 error = bus_setup_intr(dev, sc->alc_irq, INTR_MPSAFE, alc_intr, sc,
1575 &sc->alc_intrhand, ifp->if_serializer);
1577 device_printf(dev, "could not set up interrupt handler.\n");
1578 ether_ifdetach(ifp);
1591 alc_detach(device_t dev)
1593 struct alc_softc *sc = device_get_softc(dev);
1595 if (device_is_attached(dev)) {
1596 struct ifnet *ifp = sc->alc_ifp;
1598 lwkt_serialize_enter(ifp->if_serializer);
1600 bus_teardown_intr(dev, sc->alc_irq, sc->alc_intrhand);
1601 lwkt_serialize_exit(ifp->if_serializer);
1603 ether_ifdetach(ifp);
1606 if (sc->alc_miibus != NULL)
1607 device_delete_child(dev, sc->alc_miibus);
1608 bus_generic_detach(dev);
1610 if (sc->alc_res != NULL)
1613 if (sc->alc_irq != NULL) {
1614 bus_release_resource(dev, SYS_RES_IRQ, sc->alc_irq_rid,
1617 if (sc->alc_irq_type == PCI_INTR_TYPE_MSI)
1618 pci_release_msi(dev);
1620 if (sc->alc_res != NULL) {
1621 bus_release_resource(dev, SYS_RES_MEMORY, sc->alc_res_rid,
1630 #define ALC_SYSCTL_STAT_ADD32(c, h, n, p, d) \
1631 SYSCTL_ADD_UINT(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1632 #define ALC_SYSCTL_STAT_ADD64(c, h, n, p, d) \
1633 SYSCTL_ADD_QUAD(c, h, OID_AUTO, n, CTLFLAG_RD, p, 0, d)
1636 alc_sysctl_node(struct alc_softc *sc)
1638 struct sysctl_ctx_list *ctx;
1639 struct sysctl_oid *tree;
1640 struct sysctl_oid_list *child, *parent;
1641 struct alc_hw_stats *stats;
1644 stats = &sc->alc_stats;
1645 ctx = device_get_sysctl_ctx(sc->alc_dev);
1646 child = SYSCTL_CHILDREN(device_get_sysctl_tree(sc->alc_dev));
1648 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_rx_mod",
1649 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_rx_mod, 0,
1650 sysctl_hw_alc_int_mod, "I", "alc Rx interrupt moderation");
1651 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "int_tx_mod",
1652 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_int_tx_mod, 0,
1653 sysctl_hw_alc_int_mod, "I", "alc Tx interrupt moderation");
1654 /* Pull in device tunables. */
1655 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1656 error = resource_int_value(device_get_name(sc->alc_dev),
1657 device_get_unit(sc->alc_dev), "int_rx_mod", &sc->alc_int_rx_mod);
1659 if (sc->alc_int_rx_mod < ALC_IM_TIMER_MIN ||
1660 sc->alc_int_rx_mod > ALC_IM_TIMER_MAX) {
1661 device_printf(sc->alc_dev, "int_rx_mod value out of "
1662 "range; using default: %d\n",
1663 ALC_IM_RX_TIMER_DEFAULT);
1664 sc->alc_int_rx_mod = ALC_IM_RX_TIMER_DEFAULT;
1667 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1668 error = resource_int_value(device_get_name(sc->alc_dev),
1669 device_get_unit(sc->alc_dev), "int_tx_mod", &sc->alc_int_tx_mod);
1671 if (sc->alc_int_tx_mod < ALC_IM_TIMER_MIN ||
1672 sc->alc_int_tx_mod > ALC_IM_TIMER_MAX) {
1673 device_printf(sc->alc_dev, "int_tx_mod value out of "
1674 "range; using default: %d\n",
1675 ALC_IM_TX_TIMER_DEFAULT);
1676 sc->alc_int_tx_mod = ALC_IM_TX_TIMER_DEFAULT;
1679 SYSCTL_ADD_PROC(ctx, child, OID_AUTO, "process_limit",
1680 CTLTYPE_INT | CTLFLAG_RW, &sc->alc_process_limit, 0,
1681 sysctl_hw_alc_proc_limit, "I",
1682 "max number of Rx events to process");
1683 /* Pull in device tunables. */
1684 sc->alc_process_limit = ALC_PROC_DEFAULT;
1685 error = resource_int_value(device_get_name(sc->alc_dev),
1686 device_get_unit(sc->alc_dev), "process_limit",
1687 &sc->alc_process_limit);
1689 if (sc->alc_process_limit < ALC_PROC_MIN ||
1690 sc->alc_process_limit > ALC_PROC_MAX) {
1691 device_printf(sc->alc_dev,
1692 "process_limit value out of range; "
1693 "using default: %d\n", ALC_PROC_DEFAULT);
1694 sc->alc_process_limit = ALC_PROC_DEFAULT;
1698 tree = SYSCTL_ADD_NODE(ctx, child, OID_AUTO, "stats", CTLFLAG_RD,
1699 NULL, "ALC statistics");
1700 parent = SYSCTL_CHILDREN(tree);
1702 /* Rx statistics. */
1703 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "rx", CTLFLAG_RD,
1704 NULL, "Rx MAC statistics");
1705 child = SYSCTL_CHILDREN(tree);
1706 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1707 &stats->rx_frames, "Good frames");
1708 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1709 &stats->rx_bcast_frames, "Good broadcast frames");
1710 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1711 &stats->rx_mcast_frames, "Good multicast frames");
1712 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1713 &stats->rx_pause_frames, "Pause control frames");
1714 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1715 &stats->rx_control_frames, "Control frames");
1716 ALC_SYSCTL_STAT_ADD32(ctx, child, "crc_errs",
1717 &stats->rx_crcerrs, "CRC errors");
1718 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1719 &stats->rx_lenerrs, "Frames with length mismatched");
1720 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1721 &stats->rx_bytes, "Good octets");
1722 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1723 &stats->rx_bcast_bytes, "Good broadcast octets");
1724 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1725 &stats->rx_mcast_bytes, "Good multicast octets");
1726 ALC_SYSCTL_STAT_ADD32(ctx, child, "runts",
1727 &stats->rx_runts, "Too short frames");
1728 ALC_SYSCTL_STAT_ADD32(ctx, child, "fragments",
1729 &stats->rx_fragments, "Fragmented frames");
1730 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1731 &stats->rx_pkts_64, "64 bytes frames");
1732 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1733 &stats->rx_pkts_65_127, "65 to 127 bytes frames");
1734 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1735 &stats->rx_pkts_128_255, "128 to 255 bytes frames");
1736 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1737 &stats->rx_pkts_256_511, "256 to 511 bytes frames");
1738 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1739 &stats->rx_pkts_512_1023, "512 to 1023 bytes frames");
1740 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1741 &stats->rx_pkts_1024_1518, "1024 to 1518 bytes frames");
1742 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1743 &stats->rx_pkts_1519_max, "1519 to max frames");
1744 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1745 &stats->rx_pkts_truncated, "Truncated frames due to MTU size");
1746 ALC_SYSCTL_STAT_ADD32(ctx, child, "fifo_oflows",
1747 &stats->rx_fifo_oflows, "FIFO overflows");
1748 ALC_SYSCTL_STAT_ADD32(ctx, child, "rrs_errs",
1749 &stats->rx_rrs_errs, "Return status write-back errors");
1750 ALC_SYSCTL_STAT_ADD32(ctx, child, "align_errs",
1751 &stats->rx_alignerrs, "Alignment errors");
1752 ALC_SYSCTL_STAT_ADD32(ctx, child, "filtered",
1753 &stats->rx_pkts_filtered,
1754 "Frames dropped due to address filtering");
1756 /* Tx statistics. */
1757 tree = SYSCTL_ADD_NODE(ctx, parent, OID_AUTO, "tx", CTLFLAG_RD,
1758 NULL, "Tx MAC statistics");
1759 child = SYSCTL_CHILDREN(tree);
1760 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_frames",
1761 &stats->tx_frames, "Good frames");
1762 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_bcast_frames",
1763 &stats->tx_bcast_frames, "Good broadcast frames");
1764 ALC_SYSCTL_STAT_ADD32(ctx, child, "good_mcast_frames",
1765 &stats->tx_mcast_frames, "Good multicast frames");
1766 ALC_SYSCTL_STAT_ADD32(ctx, child, "pause_frames",
1767 &stats->tx_pause_frames, "Pause control frames");
1768 ALC_SYSCTL_STAT_ADD32(ctx, child, "control_frames",
1769 &stats->tx_control_frames, "Control frames");
1770 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_defers",
1771 &stats->tx_excess_defer, "Frames with excessive derferrals");
1772 ALC_SYSCTL_STAT_ADD32(ctx, child, "defers",
1773 &stats->tx_excess_defer, "Frames with derferrals");
1774 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_octets",
1775 &stats->tx_bytes, "Good octets");
1776 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_bcast_octets",
1777 &stats->tx_bcast_bytes, "Good broadcast octets");
1778 ALC_SYSCTL_STAT_ADD64(ctx, child, "good_mcast_octets",
1779 &stats->tx_mcast_bytes, "Good multicast octets");
1780 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_64",
1781 &stats->tx_pkts_64, "64 bytes frames");
1782 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_65_127",
1783 &stats->tx_pkts_65_127, "65 to 127 bytes frames");
1784 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_128_255",
1785 &stats->tx_pkts_128_255, "128 to 255 bytes frames");
1786 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_256_511",
1787 &stats->tx_pkts_256_511, "256 to 511 bytes frames");
1788 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_512_1023",
1789 &stats->tx_pkts_512_1023, "512 to 1023 bytes frames");
1790 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1024_1518",
1791 &stats->tx_pkts_1024_1518, "1024 to 1518 bytes frames");
1792 ALC_SYSCTL_STAT_ADD32(ctx, child, "frames_1519_max",
1793 &stats->tx_pkts_1519_max, "1519 to max frames");
1794 ALC_SYSCTL_STAT_ADD32(ctx, child, "single_colls",
1795 &stats->tx_single_colls, "Single collisions");
1796 ALC_SYSCTL_STAT_ADD32(ctx, child, "multi_colls",
1797 &stats->tx_multi_colls, "Multiple collisions");
1798 ALC_SYSCTL_STAT_ADD32(ctx, child, "late_colls",
1799 &stats->tx_late_colls, "Late collisions");
1800 ALC_SYSCTL_STAT_ADD32(ctx, child, "excess_colls",
1801 &stats->tx_excess_colls, "Excessive collisions");
1802 ALC_SYSCTL_STAT_ADD32(ctx, child, "underruns",
1803 &stats->tx_underrun, "FIFO underruns");
1804 ALC_SYSCTL_STAT_ADD32(ctx, child, "desc_underruns",
1805 &stats->tx_desc_underrun, "Descriptor write-back errors");
1806 ALC_SYSCTL_STAT_ADD32(ctx, child, "len_errs",
1807 &stats->tx_lenerrs, "Frames with length mismatched");
1808 ALC_SYSCTL_STAT_ADD32(ctx, child, "trunc_errs",
1809 &stats->tx_pkts_truncated, "Truncated frames due to MTU size");
1812 #undef ALC_SYSCTL_STAT_ADD32
1813 #undef ALC_SYSCTL_STAT_ADD64
1815 struct alc_dmamap_arg {
1816 bus_addr_t alc_busaddr;
1820 alc_dmamap_cb(void *arg, bus_dma_segment_t *segs, int nsegs, int error)
1822 struct alc_dmamap_arg *ctx;
1827 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
1829 ctx = (struct alc_dmamap_arg *)arg;
1830 ctx->alc_busaddr = segs[0].ds_addr;
1835 * Normal and high Tx descriptors shares single Tx high address.
1836 * Four Rx descriptor/return rings and CMB shares the same Rx
1840 alc_check_boundary(struct alc_softc *sc)
1842 bus_addr_t cmb_end, rx_ring_end, rr_ring_end, tx_ring_end;
1844 rx_ring_end = sc->alc_rdata.alc_rx_ring_paddr + ALC_RX_RING_SZ;
1845 rr_ring_end = sc->alc_rdata.alc_rr_ring_paddr + ALC_RR_RING_SZ;
1846 cmb_end = sc->alc_rdata.alc_cmb_paddr + ALC_CMB_SZ;
1847 tx_ring_end = sc->alc_rdata.alc_tx_ring_paddr + ALC_TX_RING_SZ;
1849 /* 4GB boundary crossing is not allowed. */
1850 if ((ALC_ADDR_HI(rx_ring_end) !=
1851 ALC_ADDR_HI(sc->alc_rdata.alc_rx_ring_paddr)) ||
1852 (ALC_ADDR_HI(rr_ring_end) !=
1853 ALC_ADDR_HI(sc->alc_rdata.alc_rr_ring_paddr)) ||
1854 (ALC_ADDR_HI(cmb_end) !=
1855 ALC_ADDR_HI(sc->alc_rdata.alc_cmb_paddr)) ||
1856 (ALC_ADDR_HI(tx_ring_end) !=
1857 ALC_ADDR_HI(sc->alc_rdata.alc_tx_ring_paddr)))
1860 * Make sure Rx return descriptor/Rx descriptor/CMB use
1861 * the same high address.
1863 if ((ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(rr_ring_end)) ||
1864 (ALC_ADDR_HI(rx_ring_end) != ALC_ADDR_HI(cmb_end)))
1872 alc_dma_alloc(struct alc_softc *sc)
1874 struct alc_txdesc *txd;
1875 struct alc_rxdesc *rxd;
1876 struct alc_dmamap_arg ctx;
1879 /* Create parent DMA tag. */
1880 error = bus_dma_tag_create(
1881 sc->alc_cdata.alc_parent_tag, /* parent */
1882 1, 0, /* alignment, boundary */
1883 BUS_SPACE_MAXADDR, /* lowaddr */
1884 BUS_SPACE_MAXADDR, /* highaddr */
1885 NULL, NULL, /* filter, filterarg */
1886 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
1888 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
1890 &sc->alc_cdata.alc_parent_tag);
1892 device_printf(sc->alc_dev,
1893 "could not create parent DMA tag.\n");
1897 /* Create DMA tag for Tx descriptor ring. */
1898 error = bus_dma_tag_create(
1899 sc->alc_cdata.alc_parent_tag, /* parent */
1900 ALC_TX_RING_ALIGN, 0, /* alignment, boundary */
1901 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1902 BUS_SPACE_MAXADDR, /* highaddr */
1903 NULL, NULL, /* filter, filterarg */
1904 ALC_TX_RING_SZ, /* maxsize */
1906 ALC_TX_RING_SZ, /* maxsegsize */
1908 &sc->alc_cdata.alc_tx_ring_tag);
1910 device_printf(sc->alc_dev,
1911 "could not create Tx ring DMA tag.\n");
1915 /* Create DMA tag for Rx free descriptor ring. */
1916 error = bus_dma_tag_create(
1917 sc->alc_cdata.alc_parent_tag, /* parent */
1918 ALC_RX_RING_ALIGN, 0, /* alignment, boundary */
1919 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1920 BUS_SPACE_MAXADDR, /* highaddr */
1921 NULL, NULL, /* filter, filterarg */
1922 ALC_RX_RING_SZ, /* maxsize */
1924 ALC_RX_RING_SZ, /* maxsegsize */
1926 &sc->alc_cdata.alc_rx_ring_tag);
1928 device_printf(sc->alc_dev,
1929 "could not create Rx ring DMA tag.\n");
1932 /* Create DMA tag for Rx return descriptor ring. */
1933 error = bus_dma_tag_create(
1934 sc->alc_cdata.alc_parent_tag, /* parent */
1935 ALC_RR_RING_ALIGN, 0, /* alignment, boundary */
1936 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1937 BUS_SPACE_MAXADDR, /* highaddr */
1938 NULL, NULL, /* filter, filterarg */
1939 ALC_RR_RING_SZ, /* maxsize */
1941 ALC_RR_RING_SZ, /* maxsegsize */
1943 &sc->alc_cdata.alc_rr_ring_tag);
1945 device_printf(sc->alc_dev,
1946 "could not create Rx return ring DMA tag.\n");
1950 /* Create DMA tag for coalescing message block. */
1951 error = bus_dma_tag_create(
1952 sc->alc_cdata.alc_parent_tag, /* parent */
1953 ALC_CMB_ALIGN, 0, /* alignment, boundary */
1954 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1955 BUS_SPACE_MAXADDR, /* highaddr */
1956 NULL, NULL, /* filter, filterarg */
1957 ALC_CMB_SZ, /* maxsize */
1959 ALC_CMB_SZ, /* maxsegsize */
1961 &sc->alc_cdata.alc_cmb_tag);
1963 device_printf(sc->alc_dev,
1964 "could not create CMB DMA tag.\n");
1967 /* Create DMA tag for status message block. */
1968 error = bus_dma_tag_create(
1969 sc->alc_cdata.alc_parent_tag, /* parent */
1970 ALC_SMB_ALIGN, 0, /* alignment, boundary */
1971 BUS_SPACE_MAXADDR_32BIT, /* lowaddr */
1972 BUS_SPACE_MAXADDR, /* highaddr */
1973 NULL, NULL, /* filter, filterarg */
1974 ALC_SMB_SZ, /* maxsize */
1976 ALC_SMB_SZ, /* maxsegsize */
1978 &sc->alc_cdata.alc_smb_tag);
1980 device_printf(sc->alc_dev,
1981 "could not create SMB DMA tag.\n");
1985 /* Allocate DMA'able memory and load the DMA map for Tx ring. */
1986 error = bus_dmamem_alloc(sc->alc_cdata.alc_tx_ring_tag,
1987 (void **)&sc->alc_rdata.alc_tx_ring,
1988 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
1989 &sc->alc_cdata.alc_tx_ring_map);
1991 device_printf(sc->alc_dev,
1992 "could not allocate DMA'able memory for Tx ring.\n");
1995 ctx.alc_busaddr = 0;
1996 error = bus_dmamap_load(sc->alc_cdata.alc_tx_ring_tag,
1997 sc->alc_cdata.alc_tx_ring_map, sc->alc_rdata.alc_tx_ring,
1998 ALC_TX_RING_SZ, alc_dmamap_cb, &ctx, 0);
1999 if (error != 0 || ctx.alc_busaddr == 0) {
2000 device_printf(sc->alc_dev,
2001 "could not load DMA'able memory for Tx ring.\n");
2004 sc->alc_rdata.alc_tx_ring_paddr = ctx.alc_busaddr;
2006 /* Allocate DMA'able memory and load the DMA map for Rx ring. */
2007 error = bus_dmamem_alloc(sc->alc_cdata.alc_rx_ring_tag,
2008 (void **)&sc->alc_rdata.alc_rx_ring,
2009 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2010 &sc->alc_cdata.alc_rx_ring_map);
2012 device_printf(sc->alc_dev,
2013 "could not allocate DMA'able memory for Rx ring.\n");
2016 ctx.alc_busaddr = 0;
2017 error = bus_dmamap_load(sc->alc_cdata.alc_rx_ring_tag,
2018 sc->alc_cdata.alc_rx_ring_map, sc->alc_rdata.alc_rx_ring,
2019 ALC_RX_RING_SZ, alc_dmamap_cb, &ctx, 0);
2020 if (error != 0 || ctx.alc_busaddr == 0) {
2021 device_printf(sc->alc_dev,
2022 "could not load DMA'able memory for Rx ring.\n");
2025 sc->alc_rdata.alc_rx_ring_paddr = ctx.alc_busaddr;
2027 /* Allocate DMA'able memory and load the DMA map for Rx return ring. */
2028 error = bus_dmamem_alloc(sc->alc_cdata.alc_rr_ring_tag,
2029 (void **)&sc->alc_rdata.alc_rr_ring,
2030 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2031 &sc->alc_cdata.alc_rr_ring_map);
2033 device_printf(sc->alc_dev,
2034 "could not allocate DMA'able memory for Rx return ring.\n");
2037 ctx.alc_busaddr = 0;
2038 error = bus_dmamap_load(sc->alc_cdata.alc_rr_ring_tag,
2039 sc->alc_cdata.alc_rr_ring_map, sc->alc_rdata.alc_rr_ring,
2040 ALC_RR_RING_SZ, alc_dmamap_cb, &ctx, 0);
2041 if (error != 0 || ctx.alc_busaddr == 0) {
2042 device_printf(sc->alc_dev,
2043 "could not load DMA'able memory for Tx ring.\n");
2046 sc->alc_rdata.alc_rr_ring_paddr = ctx.alc_busaddr;
2048 /* Allocate DMA'able memory and load the DMA map for CMB. */
2049 error = bus_dmamem_alloc(sc->alc_cdata.alc_cmb_tag,
2050 (void **)&sc->alc_rdata.alc_cmb,
2051 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2052 &sc->alc_cdata.alc_cmb_map);
2054 device_printf(sc->alc_dev,
2055 "could not allocate DMA'able memory for CMB.\n");
2058 ctx.alc_busaddr = 0;
2059 error = bus_dmamap_load(sc->alc_cdata.alc_cmb_tag,
2060 sc->alc_cdata.alc_cmb_map, sc->alc_rdata.alc_cmb,
2061 ALC_CMB_SZ, alc_dmamap_cb, &ctx, 0);
2062 if (error != 0 || ctx.alc_busaddr == 0) {
2063 device_printf(sc->alc_dev,
2064 "could not load DMA'able memory for CMB.\n");
2067 sc->alc_rdata.alc_cmb_paddr = ctx.alc_busaddr;
2069 /* Allocate DMA'able memory and load the DMA map for SMB. */
2070 error = bus_dmamem_alloc(sc->alc_cdata.alc_smb_tag,
2071 (void **)&sc->alc_rdata.alc_smb,
2072 BUS_DMA_WAITOK | BUS_DMA_ZERO | BUS_DMA_COHERENT,
2073 &sc->alc_cdata.alc_smb_map);
2075 device_printf(sc->alc_dev,
2076 "could not allocate DMA'able memory for SMB.\n");
2079 ctx.alc_busaddr = 0;
2080 error = bus_dmamap_load(sc->alc_cdata.alc_smb_tag,
2081 sc->alc_cdata.alc_smb_map, sc->alc_rdata.alc_smb,
2082 ALC_SMB_SZ, alc_dmamap_cb, &ctx, 0);
2083 if (error != 0 || ctx.alc_busaddr == 0) {
2084 device_printf(sc->alc_dev,
2085 "could not load DMA'able memory for CMB.\n");
2088 sc->alc_rdata.alc_smb_paddr = ctx.alc_busaddr;
2092 * All of the status blocks and descriptor rings are
2093 * allocated at lower 4GB, their addresses high 32bits
2094 * part are same (all 0).
2097 /* Make sure we've not crossed 4GB boundary. */
2098 if ((error = alc_check_boundary(sc)) != 0) {
2099 device_printf(sc->alc_dev, "4GB boundary crossed, "
2100 "switching to 32bit DMA addressing mode.\n");
2103 * Limit max allowable DMA address space to 32bit
2106 lowaddr = BUS_SPACE_MAXADDR_32BIT;
2112 * Create Tx buffer parent tag.
2113 * AR81[3567]x allows 64bit DMA addressing of Tx/Rx buffers
2114 * so it needs separate parent DMA tag as parent DMA address
2115 * space could be restricted to be within 32bit address space
2116 * by 4GB boundary crossing.
2118 error = bus_dma_tag_create(
2119 sc->alc_cdata.alc_parent_tag, /* parent */
2120 1, 0, /* alignment, boundary */
2121 BUS_SPACE_MAXADDR, /* lowaddr */
2122 BUS_SPACE_MAXADDR, /* highaddr */
2123 NULL, NULL, /* filter, filterarg */
2124 BUS_SPACE_MAXSIZE_32BIT, /* maxsize */
2126 BUS_SPACE_MAXSIZE_32BIT, /* maxsegsize */
2128 &sc->alc_cdata.alc_buffer_tag);
2130 device_printf(sc->alc_dev,
2131 "could not create parent buffer DMA tag.\n");
2135 /* Create DMA tag for Tx buffers. */
2136 error = bus_dma_tag_create(
2137 sc->alc_cdata.alc_buffer_tag, /* parent */
2138 1, 0, /* alignment, boundary */
2139 BUS_SPACE_MAXADDR, /* lowaddr */
2140 BUS_SPACE_MAXADDR, /* highaddr */
2141 NULL, NULL, /* filter, filterarg */
2142 ALC_TSO_MAXSIZE, /* maxsize */
2143 ALC_MAXTXSEGS, /* nsegments */
2144 ALC_TSO_MAXSEGSIZE, /* maxsegsize */
2145 BUS_DMA_ALLOCNOW | BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE, /* flags */
2146 &sc->alc_cdata.alc_tx_tag);
2148 device_printf(sc->alc_dev, "could not create Tx DMA tag.\n");
2152 /* Create DMA tag for Rx buffers. */
2153 error = bus_dma_tag_create(
2154 sc->alc_cdata.alc_buffer_tag, /* parent */
2155 ALC_RX_BUF_ALIGN, 0, /* alignment, boundary */
2156 BUS_SPACE_MAXADDR, /* lowaddr */
2157 BUS_SPACE_MAXADDR, /* highaddr */
2158 NULL, NULL, /* filter, filterarg */
2159 MCLBYTES, /* maxsize */
2161 MCLBYTES, /* maxsegsize */
2162 BUS_DMA_WAITOK | BUS_DMA_ALLOCNOW | BUS_DMA_ALIGNED, /* flags */
2163 &sc->alc_cdata.alc_rx_tag);
2165 device_printf(sc->alc_dev, "could not create Rx DMA tag.\n");
2168 /* Create DMA maps for Tx buffers. */
2169 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2170 txd = &sc->alc_cdata.alc_txdesc[i];
2172 txd->tx_dmamap = NULL;
2173 error = bus_dmamap_create(sc->alc_cdata.alc_tx_tag,
2174 BUS_DMA_WAITOK | BUS_DMA_ONEBPAGE,
2177 device_printf(sc->alc_dev,
2178 "could not create Tx dmamap.\n");
2182 /* Create DMA maps for Rx buffers. */
2183 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag,
2185 &sc->alc_cdata.alc_rx_sparemap);
2187 device_printf(sc->alc_dev,
2188 "could not create spare Rx dmamap.\n");
2191 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2192 rxd = &sc->alc_cdata.alc_rxdesc[i];
2194 rxd->rx_dmamap = NULL;
2195 error = bus_dmamap_create(sc->alc_cdata.alc_rx_tag,
2199 device_printf(sc->alc_dev,
2200 "could not create Rx dmamap.\n");
2210 alc_dma_free(struct alc_softc *sc)
2212 struct alc_txdesc *txd;
2213 struct alc_rxdesc *rxd;
2217 if (sc->alc_cdata.alc_tx_tag != NULL) {
2218 for (i = 0; i < ALC_TX_RING_CNT; i++) {
2219 txd = &sc->alc_cdata.alc_txdesc[i];
2220 if (txd->tx_dmamap != NULL) {
2221 bus_dmamap_destroy(sc->alc_cdata.alc_tx_tag,
2223 txd->tx_dmamap = NULL;
2226 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_tag);
2227 sc->alc_cdata.alc_tx_tag = NULL;
2230 if (sc->alc_cdata.alc_rx_tag != NULL) {
2231 for (i = 0; i < ALC_RX_RING_CNT; i++) {
2232 rxd = &sc->alc_cdata.alc_rxdesc[i];
2233 if (rxd->rx_dmamap != NULL) {
2234 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2236 rxd->rx_dmamap = NULL;
2239 if (sc->alc_cdata.alc_rx_sparemap != NULL) {
2240 bus_dmamap_destroy(sc->alc_cdata.alc_rx_tag,
2241 sc->alc_cdata.alc_rx_sparemap);
2242 sc->alc_cdata.alc_rx_sparemap = NULL;
2244 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_tag);
2245 sc->alc_cdata.alc_rx_tag = NULL;
2247 /* Tx descriptor ring. */
2248 if (sc->alc_cdata.alc_tx_ring_tag != NULL) {
2249 if (sc->alc_rdata.alc_tx_ring_paddr != 0)
2250 bus_dmamap_unload(sc->alc_cdata.alc_tx_ring_tag,
2251 sc->alc_cdata.alc_tx_ring_map);
2252 if (sc->alc_rdata.alc_tx_ring != NULL)
2253 bus_dmamem_free(sc->alc_cdata.alc_tx_ring_tag,
2254 sc->alc_rdata.alc_tx_ring,
2255 sc->alc_cdata.alc_tx_ring_map);
2256 sc->alc_rdata.alc_tx_ring_paddr = 0;
2257 sc->alc_rdata.alc_tx_ring = NULL;
2258 sc->alc_cdata.alc_tx_ring_map = NULL;
2259 bus_dma_tag_destroy(sc->alc_cdata.alc_tx_ring_tag);
2260 sc->alc_cdata.alc_tx_ring_tag = NULL;
2263 if (sc->alc_cdata.alc_rx_ring_tag != NULL) {
2264 if (sc->alc_rdata.alc_rx_ring_paddr != 0)
2265 bus_dmamap_unload(sc->alc_cdata.alc_rx_ring_tag,
2266 sc->alc_cdata.alc_rx_ring_map);
2267 if (sc->alc_rdata.alc_rx_ring != NULL)
2268 bus_dmamem_free(sc->alc_cdata.alc_rx_ring_tag,
2269 sc->alc_rdata.alc_rx_ring,
2270 sc->alc_cdata.alc_rx_ring_map);
2271 sc->alc_rdata.alc_rx_ring_paddr = 0;
2272 sc->alc_rdata.alc_rx_ring = NULL;
2273 sc->alc_cdata.alc_rx_ring_map = NULL;
2274 bus_dma_tag_destroy(sc->alc_cdata.alc_rx_ring_tag);
2275 sc->alc_cdata.alc_rx_ring_tag = NULL;
2277 /* Rx return ring. */
2278 if (sc->alc_cdata.alc_rr_ring_tag != NULL) {
2279 if (sc->alc_rdata.alc_rr_ring_paddr != 0)
2280 bus_dmamap_unload(sc->alc_cdata.alc_rr_ring_tag,
2281 sc->alc_cdata.alc_rr_ring_map);
2282 if (sc->alc_rdata.alc_rr_ring != NULL)
2283 bus_dmamem_free(sc->alc_cdata.alc_rr_ring_tag,
2284 sc->alc_rdata.alc_rr_ring,
2285 sc->alc_cdata.alc_rr_ring_map);
2286 sc->alc_rdata.alc_rr_ring_paddr = 0;
2287 sc->alc_rdata.alc_rr_ring = NULL;
2288 sc->alc_cdata.alc_rr_ring_map = NULL;
2289 bus_dma_tag_destroy(sc->alc_cdata.alc_rr_ring_tag);
2290 sc->alc_cdata.alc_rr_ring_tag = NULL;
2293 if (sc->alc_cdata.alc_cmb_tag != NULL) {
2294 if (sc->alc_rdata.alc_cmb_paddr != 0)
2295 bus_dmamap_unload(sc->alc_cdata.alc_cmb_tag,
2296 sc->alc_cdata.alc_cmb_map);
2297 if (sc->alc_rdata.alc_cmb != NULL)
2298 bus_dmamem_free(sc->alc_cdata.alc_cmb_tag,
2299 sc->alc_rdata.alc_cmb,
2300 sc->alc_cdata.alc_cmb_map);
2301 sc->alc_rdata.alc_cmb_paddr = 0;
2302 sc->alc_rdata.alc_cmb = NULL;
2303 sc->alc_cdata.alc_cmb_map = NULL;
2304 bus_dma_tag_destroy(sc->alc_cdata.alc_cmb_tag);
2305 sc->alc_cdata.alc_cmb_tag = NULL;
2308 if (sc->alc_cdata.alc_smb_tag != NULL) {
2309 if (sc->alc_rdata.alc_smb_paddr != 0)
2310 bus_dmamap_unload(sc->alc_cdata.alc_smb_tag,
2311 sc->alc_cdata.alc_smb_map);
2312 if (sc->alc_rdata.alc_smb != NULL)
2313 bus_dmamem_free(sc->alc_cdata.alc_smb_tag,
2314 sc->alc_rdata.alc_smb,
2315 sc->alc_cdata.alc_smb_map);
2316 sc->alc_rdata.alc_smb_paddr = 0;
2317 sc->alc_rdata.alc_smb = NULL;
2318 sc->alc_cdata.alc_smb_map = NULL;
2319 bus_dma_tag_destroy(sc->alc_cdata.alc_smb_tag);
2320 sc->alc_cdata.alc_smb_tag = NULL;
2322 if (sc->alc_cdata.alc_buffer_tag != NULL) {
2323 bus_dma_tag_destroy(sc->alc_cdata.alc_buffer_tag);
2324 sc->alc_cdata.alc_buffer_tag = NULL;
2326 if (sc->alc_cdata.alc_parent_tag != NULL) {
2327 bus_dma_tag_destroy(sc->alc_cdata.alc_parent_tag);
2328 sc->alc_cdata.alc_parent_tag = NULL;
2333 alc_shutdown(device_t dev)
2336 return (alc_suspend(dev));
2340 /* XXX: LINK SPEED */
2342 * Note, this driver resets the link speed to 10/100Mbps by
2343 * restarting auto-negotiation in suspend/shutdown phase but we
2344 * don't know whether that auto-negotiation would succeed or not
2345 * as driver has no control after powering off/suspend operation.
2346 * If the renegotiation fail WOL may not work. Running at 1Gbps
2347 * will draw more power than 375mA at 3.3V which is specified in
2348 * PCI specification and that would result in complete
2349 * shutdowning power to ethernet controller.
2352 * Save current negotiated media speed/duplex/flow-control to
2353 * softc and restore the same link again after resuming. PHY
2354 * handling such as power down/resetting to 100Mbps may be better
2355 * handled in suspend method in phy driver.
2358 alc_setlinkspeed(struct alc_softc *sc)
2360 struct mii_data *mii;
2363 mii = device_get_softc(sc->alc_miibus);
2366 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID)) ==
2367 (IFM_ACTIVE | IFM_AVALID)) {
2368 switch IFM_SUBTYPE(mii->mii_media_active) {
2379 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr, MII_100T2CR, 0);
2380 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2381 MII_ANAR, ANAR_TX_FD | ANAR_TX | ANAR_10_FD | ANAR_10 | ANAR_CSMA);
2382 alc_miibus_writereg(sc->alc_dev, sc->alc_phyaddr,
2383 MII_BMCR, BMCR_RESET | BMCR_AUTOEN | BMCR_STARTNEG);
2387 * Poll link state until alc(4) get a 10/100Mbps link.
2389 for (i = 0; i < MII_ANEGTICKS_GIGE; i++) {
2391 if ((mii->mii_media_status & (IFM_ACTIVE | IFM_AVALID))
2392 == (IFM_ACTIVE | IFM_AVALID)) {
2393 switch (IFM_SUBTYPE(
2394 mii->mii_media_active)) {
2404 pause("alclnk", hz);
2407 if (i == MII_ANEGTICKS_GIGE)
2408 device_printf(sc->alc_dev,
2409 "establishing a link failed, WOL may not work!");
2412 * No link, force MAC to have 100Mbps, full-duplex link.
2413 * This is the last resort and may/may not work.
2415 mii->mii_media_status = IFM_AVALID | IFM_ACTIVE;
2416 mii->mii_media_active = IFM_ETHER | IFM_100_TX | IFM_FDX;
2424 alc_setwol(struct alc_softc *sc)
2426 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2427 alc_setwol_816x(sc);
2429 alc_setwol_813x(sc);
2433 alc_setwol_813x(struct alc_softc *sc)
2439 ALC_LOCK_ASSERT(sc);
2441 alc_disable_l0s_l1(sc);
2443 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2445 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2446 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2447 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2448 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2449 /* Force PHY power down. */
2451 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2452 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2456 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2457 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2458 alc_setlinkspeed(sc);
2459 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2460 CSR_READ_4(sc, ALC_MASTER_CFG) & ~MASTER_CLK_SEL_DIS);
2464 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2465 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2466 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2467 reg = CSR_READ_4(sc, ALC_MAC_CFG);
2468 reg &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2470 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2471 reg |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2472 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2473 reg |= MAC_CFG_RX_ENB;
2474 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
2476 reg = CSR_READ_4(sc, ALC_PCIE_PHYMISC);
2477 reg |= PCIE_PHYMISC_FORCE_RCV_DET;
2478 CSR_WRITE_4(sc, ALC_PCIE_PHYMISC, reg);
2479 if ((ifp->if_capenable & IFCAP_WOL) == 0) {
2480 /* WOL disabled, PHY power down. */
2482 CSR_WRITE_4(sc, ALC_MASTER_CFG,
2483 CSR_READ_4(sc, ALC_MASTER_CFG) | MASTER_CLK_SEL_DIS);
2487 pmstat = pci_read_config(sc->alc_dev,
2488 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2489 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2490 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2491 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2492 pci_write_config(sc->alc_dev,
2493 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2497 alc_setwol_816x(struct alc_softc *sc)
2500 uint32_t gphy, mac, master, pmcs, reg;
2503 ALC_LOCK_ASSERT(sc);
2506 master = CSR_READ_4(sc, ALC_MASTER_CFG);
2507 master &= ~MASTER_CLK_SEL_DIS;
2508 gphy = CSR_READ_4(sc, ALC_GPHY_CFG);
2509 gphy &= ~(GPHY_CFG_EXT_RESET | GPHY_CFG_LED_MODE | GPHY_CFG_100AB_ENB |
2510 GPHY_CFG_PHY_PLL_ON);
2511 gphy |= GPHY_CFG_HIB_EN | GPHY_CFG_HIB_PULSE | GPHY_CFG_SEL_ANA_RESET;
2512 if ((sc->alc_flags & ALC_FLAG_PM) == 0) {
2513 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
2514 gphy |= GPHY_CFG_PHY_IDDQ | GPHY_CFG_PWDOWN_HW;
2515 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2517 if ((ifp->if_capenable & IFCAP_WOL) != 0) {
2518 gphy |= GPHY_CFG_EXT_RESET;
2519 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0)
2520 alc_setlinkspeed(sc);
2523 if ((ifp->if_capenable & IFCAP_WOL_MAGIC) != 0)
2524 pmcs |= WOL_CFG_MAGIC | WOL_CFG_MAGIC_ENB;
2525 CSR_WRITE_4(sc, ALC_WOL_CFG, pmcs);
2526 mac = CSR_READ_4(sc, ALC_MAC_CFG);
2527 mac &= ~(MAC_CFG_DBG | MAC_CFG_PROMISC | MAC_CFG_ALLMULTI |
2529 if ((ifp->if_capenable & IFCAP_WOL_MCAST) != 0)
2530 mac |= MAC_CFG_ALLMULTI | MAC_CFG_BCAST;
2531 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2532 mac |= MAC_CFG_RX_ENB;
2533 alc_miiext_writereg(sc, MII_EXT_ANEG, MII_EXT_ANEG_S3DIG10,
2538 reg = CSR_READ_4(sc, ALC_MISC);
2539 reg &= ~MISC_INTNLOSC_OPEN;
2540 CSR_WRITE_4(sc, ALC_MISC, reg);
2541 reg |= MISC_INTNLOSC_OPEN;
2542 CSR_WRITE_4(sc, ALC_MISC, reg);
2543 CSR_WRITE_4(sc, ALC_MASTER_CFG, master);
2544 CSR_WRITE_4(sc, ALC_MAC_CFG, mac);
2545 CSR_WRITE_4(sc, ALC_GPHY_CFG, gphy);
2546 reg = CSR_READ_4(sc, ALC_PDLL_TRNS1);
2547 reg |= PDLL_TRNS1_D3PLLOFF_ENB;
2548 CSR_WRITE_4(sc, ALC_PDLL_TRNS1, reg);
2550 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2552 pmstat = pci_read_config(sc->alc_dev,
2553 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2554 pmstat &= ~(PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE);
2555 if ((ifp->if_capenable & IFCAP_WOL) != 0)
2556 pmstat |= PCIM_PSTAT_PME | PCIM_PSTAT_PMEENABLE;
2557 pci_write_config(sc->alc_dev,
2558 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2565 alc_suspend(device_t dev)
2567 struct alc_softc *sc = device_get_softc(dev);
2568 struct ifnet *ifp = &sc->arpcom.ac_if;
2570 lwkt_serialize_enter(ifp->if_serializer);
2576 lwkt_serialize_exit(ifp->if_serializer);
2582 alc_resume(device_t dev)
2584 struct alc_softc *sc = device_get_softc(dev);
2585 struct ifnet *ifp = &sc->arpcom.ac_if;
2588 lwkt_serialize_enter(ifp->if_serializer);
2590 if ((sc->alc_flags & ALC_FLAG_PM) != 0) {
2591 /* Disable PME and clear PME status. */
2592 pmstat = pci_read_config(sc->alc_dev,
2593 sc->alc_pmcap + PCIR_POWER_STATUS, 2);
2594 if ((pmstat & PCIM_PSTAT_PMEENABLE) != 0) {
2595 pmstat &= ~PCIM_PSTAT_PMEENABLE;
2596 pci_write_config(sc->alc_dev,
2597 sc->alc_pmcap + PCIR_POWER_STATUS, pmstat, 2);
2603 if (ifp->if_flags & IFF_UP)
2606 lwkt_serialize_exit(ifp->if_serializer);
2612 alc_encap(struct alc_softc *sc, struct mbuf **m_head)
2614 struct alc_txdesc *txd, *txd_last;
2615 struct tx_desc *desc;
2619 bus_dma_segment_t txsegs[ALC_MAXTXSEGS];
2621 uint32_t cflags, hdrlen, ip_off, poff, vtag;
2622 int error, idx, nsegs, prod;
2624 M_ASSERTPKTHDR((*m_head));
2630 if ((m->m_pkthdr.csum_flags & (ALC_CSUM_FEATURES | CSUM_TSO)) != 0) {
2632 * AR81[3567]x requires offset of TCP/UDP header in its
2633 * Tx descriptor to perform Tx checksum offloading. TSO
2634 * also requires TCP header offset and modification of
2635 * IP/TCP header. This kind of operation takes many CPU
2636 * cycles on FreeBSD so fast host CPU is required to get
2637 * smooth TSO performance.
2639 struct ether_header *eh;
2641 if (M_WRITABLE(m) == 0) {
2642 /* Get a writable copy. */
2643 m = m_dup(*m_head, M_NOWAIT);
2644 /* Release original mbufs. */
2653 ip_off = sizeof(struct ether_header);
2654 m = m_pullup(m, ip_off + sizeof(struct ip));
2659 eh = mtod(m, struct ether_header *);
2661 * Check if hardware VLAN insertion is off.
2662 * Additional check for LLC/SNAP frame?
2664 if (eh->ether_type == htons(ETHERTYPE_VLAN)) {
2665 ip_off = sizeof(struct ether_vlan_header);
2666 m = m_pullup(m, ip_off);
2672 m = m_pullup(m, ip_off + sizeof(struct ip));
2677 ip = (struct ip *)(mtod(m, char *) + ip_off);
2678 poff = ip_off + (ip->ip_hl << 2);
2679 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2680 m = m_pullup(m, poff + sizeof(struct tcphdr));
2685 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2686 m = m_pullup(m, poff + (tcp->th_off << 2));
2692 * Due to strict adherence of Microsoft NDIS
2693 * Large Send specification, hardware expects
2694 * a pseudo TCP checksum inserted by upper
2695 * stack. Unfortunately the pseudo TCP
2696 * checksum that NDIS refers to does not include
2697 * TCP payload length so driver should recompute
2698 * the pseudo checksum here. Hopefully this
2699 * wouldn't be much burden on modern CPUs.
2701 * Reset IP checksum and recompute TCP pseudo
2702 * checksum as NDIS specification said.
2704 ip = (struct ip *)(mtod(m, char *) + ip_off);
2705 tcp = (struct tcphdr *)(mtod(m, char *) + poff);
2707 tcp->th_sum = in_pseudo(ip->ip_src.s_addr,
2708 ip->ip_dst.s_addr, htons(IPPROTO_TCP));
2713 prod = sc->alc_cdata.alc_tx_prod;
2714 txd = &sc->alc_cdata.alc_txdesc[prod];
2716 map = txd->tx_dmamap;
2718 error = bus_dmamap_load_mbuf_defrag(
2719 sc->alc_cdata.alc_tx_tag, map, m_head,
2720 txsegs, ALC_MAXTXSEGS, &nsegs, BUS_DMA_NOWAIT);
2732 /* Check descriptor overrun. */
2733 if (sc->alc_cdata.alc_tx_cnt + nsegs >= ALC_TX_RING_CNT - 3) {
2734 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag, map);
2737 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag, map, BUS_DMASYNC_PREWRITE);
2740 cflags = TD_ETHERNET;
2744 /* Configure VLAN hardware tag insertion. */
2745 if ((m->m_flags & M_VLANTAG) != 0) {
2746 vtag = htons(m->m_pkthdr.ether_vlantag);
2747 vtag = (vtag << TD_VLAN_SHIFT) & TD_VLAN_MASK;
2748 cflags |= TD_INS_VLAN_TAG;
2750 if ((m->m_pkthdr.csum_flags & CSUM_TSO) != 0) {
2751 /* Request TSO and set MSS. */
2752 cflags |= TD_TSO | TD_TSO_DESCV1;
2753 cflags |= ((uint32_t)m->m_pkthdr.tso_segsz << TD_MSS_SHIFT) &
2755 /* Set TCP header offset. */
2756 cflags |= (poff << TD_TCPHDR_OFFSET_SHIFT) &
2757 TD_TCPHDR_OFFSET_MASK;
2759 * AR81[3567]x requires the first buffer should
2760 * only hold IP/TCP header data. Payload should
2761 * be handled in other descriptors.
2763 hdrlen = poff + (tcp->th_off << 2);
2764 desc = &sc->alc_rdata.alc_tx_ring[prod];
2765 desc->len = htole32(TX_BYTES(hdrlen | vtag));
2766 desc->flags = htole32(cflags);
2767 desc->addr = htole64(txsegs[0].ds_addr);
2768 sc->alc_cdata.alc_tx_cnt++;
2769 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2770 if (m->m_len - hdrlen > 0) {
2771 /* Handle remaining payload of the first fragment. */
2772 desc = &sc->alc_rdata.alc_tx_ring[prod];
2773 desc->len = htole32(TX_BYTES((m->m_len - hdrlen) |
2775 desc->flags = htole32(cflags);
2776 desc->addr = htole64(txsegs[0].ds_addr + hdrlen);
2777 sc->alc_cdata.alc_tx_cnt++;
2778 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2780 /* Handle remaining fragments. */
2782 } else if ((m->m_pkthdr.csum_flags & ALC_CSUM_FEATURES) != 0) {
2783 /* Configure Tx checksum offload. */
2784 #ifdef ALC_USE_CUSTOM_CSUM
2785 cflags |= TD_CUSTOM_CSUM;
2786 /* Set checksum start offset. */
2787 cflags |= ((poff >> 1) << TD_PLOAD_OFFSET_SHIFT) &
2788 TD_PLOAD_OFFSET_MASK;
2789 /* Set checksum insertion position of TCP/UDP. */
2790 cflags |= (((poff + m->m_pkthdr.csum_data) >> 1) <<
2791 TD_CUSTOM_CSUM_OFFSET_SHIFT) & TD_CUSTOM_CSUM_OFFSET_MASK;
2793 if ((m->m_pkthdr.csum_flags & CSUM_IP) != 0)
2794 cflags |= TD_IPCSUM;
2795 if ((m->m_pkthdr.csum_flags & CSUM_TCP) != 0)
2796 cflags |= TD_TCPCSUM;
2797 if ((m->m_pkthdr.csum_flags & CSUM_UDP) != 0)
2798 cflags |= TD_UDPCSUM;
2799 /* Set TCP/UDP header offset. */
2800 cflags |= (poff << TD_L4HDR_OFFSET_SHIFT) &
2801 TD_L4HDR_OFFSET_MASK;
2805 for (; idx < nsegs; idx++) {
2806 desc = &sc->alc_rdata.alc_tx_ring[prod];
2807 desc->len = htole32(TX_BYTES(txsegs[idx].ds_len) | vtag);
2808 desc->flags = htole32(cflags);
2809 desc->addr = htole64(txsegs[idx].ds_addr);
2810 sc->alc_cdata.alc_tx_cnt++;
2811 ALC_DESC_INC(prod, ALC_TX_RING_CNT);
2813 /* Update producer index. */
2814 sc->alc_cdata.alc_tx_prod = prod;
2816 /* Finally set EOP on the last descriptor. */
2817 prod = (prod + ALC_TX_RING_CNT - 1) % ALC_TX_RING_CNT;
2818 desc = &sc->alc_rdata.alc_tx_ring[prod];
2819 desc->flags |= htole32(TD_EOP);
2821 /* Swap dmamap of the first and the last. */
2822 txd = &sc->alc_cdata.alc_txdesc[prod];
2823 map = txd_last->tx_dmamap;
2824 txd_last->tx_dmamap = txd->tx_dmamap;
2825 txd->tx_dmamap = map;
2832 alc_start(struct ifnet *ifp, struct ifaltq_subque *ifsq)
2834 struct alc_softc *sc = ifp->if_softc;
2835 struct mbuf *m_head;
2838 ASSERT_ALTQ_SQ_DEFAULT(ifp, ifsq);
2839 ASSERT_SERIALIZED(ifp->if_serializer);
2841 /* Reclaim transmitted frames. */
2842 if (sc->alc_cdata.alc_tx_cnt >= ALC_TX_DESC_HIWAT)
2845 if ((ifp->if_flags & IFF_RUNNING) == 0 || ifq_is_oactive(&ifp->if_snd))
2847 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
2848 ifq_purge(&ifp->if_snd);
2852 for (enq = 0; !ifq_is_empty(&ifp->if_snd); ) {
2853 m_head = ifq_dequeue(&ifp->if_snd);
2857 * Pack the data into the transmit ring. If we
2858 * don't have room, set the OACTIVE flag and wait
2859 * for the NIC to drain the ring.
2861 if (alc_encap(sc, &m_head)) {
2864 ifq_prepend(&ifp->if_snd, m_head);
2865 ifq_set_oactive(&ifp->if_snd);
2871 * If there's a BPF listener, bounce a copy of this frame
2874 ETHER_BPF_MTAP(ifp, m_head);
2878 /* Sync descriptors. */
2879 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
2880 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
2881 /* Kick. Assume we're using normal Tx priority queue. */
2882 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
2883 CSR_WRITE_2(sc, ALC_MBOX_TD_PRI0_PROD_IDX,
2884 (uint16_t)sc->alc_cdata.alc_tx_prod);
2886 CSR_WRITE_4(sc, ALC_MBOX_TD_PROD_IDX,
2887 (sc->alc_cdata.alc_tx_prod <<
2888 MBOX_TD_PROD_LO_IDX_SHIFT) &
2889 MBOX_TD_PROD_LO_IDX_MASK);
2890 /* Set a timeout in case the chip goes out to lunch. */
2891 sc->alc_watchdog_timer = ALC_TX_TIMEOUT;
2896 alc_watchdog(struct alc_softc *sc)
2898 struct ifnet *ifp = &sc->arpcom.ac_if;
2900 ASSERT_SERIALIZED(ifp->if_serializer);
2902 if (sc->alc_watchdog_timer == 0 || --sc->alc_watchdog_timer)
2905 if ((sc->alc_flags & ALC_FLAG_LINK) == 0) {
2906 if_printf(sc->alc_ifp, "watchdog timeout (lost link)\n");
2907 IFNET_STAT_INC(ifp, oerrors, 1);
2911 if_printf(sc->alc_ifp, "watchdog timeout -- resetting\n");
2912 IFNET_STAT_INC(ifp, oerrors, 1);
2914 if (!ifq_is_empty(&ifp->if_snd))
2919 alc_ioctl(struct ifnet *ifp, u_long cmd, caddr_t data, struct ucred *cr)
2921 struct alc_softc *sc;
2923 struct mii_data *mii;
2926 ASSERT_SERIALIZED(ifp->if_serializer);
2929 ifr = (struct ifreq *)data;
2933 if (ifr->ifr_mtu < ETHERMIN ||
2934 ifr->ifr_mtu > (sc->alc_ident->max_framelen -
2935 sizeof(struct ether_vlan_header) - ETHER_CRC_LEN) ||
2936 ((sc->alc_flags & ALC_FLAG_JUMBO) == 0 &&
2937 ifr->ifr_mtu > ETHERMTU)) {
2939 } else if (ifp->if_mtu != ifr->ifr_mtu) {
2940 ifp->if_mtu = ifr->ifr_mtu;
2942 /* AR81[3567]x has 13 bits MSS field. */
2943 if (ifp->if_mtu > ALC_TSO_MTU &&
2944 (ifp->if_capenable & IFCAP_TSO4) != 0) {
2945 ifp->if_capenable &= ~IFCAP_TSO4;
2946 ifp->if_hwassist &= ~CSUM_TSO;
2952 if ((ifp->if_flags & IFF_UP) != 0) {
2953 if ((ifp->if_flags & IFF_RUNNING) != 0 &&
2954 ((ifp->if_flags ^ sc->alc_if_flags) &
2955 (IFF_PROMISC | IFF_ALLMULTI)) != 0)
2957 else if ((ifp->if_flags & IFF_RUNNING) == 0)
2959 } else if ((ifp->if_flags & IFF_RUNNING) != 0)
2961 sc->alc_if_flags = ifp->if_flags;
2965 if ((ifp->if_flags & IFF_RUNNING) != 0)
2970 mii = device_get_softc(sc->alc_miibus);
2971 error = ifmedia_ioctl(ifp, ifr, &mii->mii_media, cmd);
2974 mask = ifr->ifr_reqcap ^ ifp->if_capenable;
2975 if ((mask & IFCAP_TXCSUM) != 0 &&
2976 (ifp->if_capabilities & IFCAP_TXCSUM) != 0) {
2977 ifp->if_capenable ^= IFCAP_TXCSUM;
2978 if ((ifp->if_capenable & IFCAP_TXCSUM) != 0)
2979 ifp->if_hwassist |= ALC_CSUM_FEATURES;
2981 ifp->if_hwassist &= ~ALC_CSUM_FEATURES;
2985 if ((mask & IFCAP_WOL_MCAST) != 0 &&
2986 (ifp->if_capabilities & IFCAP_WOL_MCAST) != 0)
2987 ifp->if_capenable ^= IFCAP_WOL_MCAST;
2988 if ((mask & IFCAP_WOL_MAGIC) != 0 &&
2989 (ifp->if_capabilities & IFCAP_WOL_MAGIC) != 0)
2990 ifp->if_capenable ^= IFCAP_WOL_MAGIC;
2992 if ((mask & IFCAP_VLAN_HWTAGGING) != 0 &&
2993 (ifp->if_capabilities & IFCAP_VLAN_HWTAGGING) != 0) {
2994 ifp->if_capenable ^= IFCAP_VLAN_HWTAGGING;
2997 if ((mask & IFCAP_VLAN_HWCSUM) != 0 &&
2998 (ifp->if_capabilities & IFCAP_VLAN_HWCSUM) != 0)
2999 ifp->if_capenable ^= IFCAP_VLAN_HWCSUM;
3002 * VLAN hardware tagging is required to do checksum
3003 * offload or TSO on VLAN interface. Checksum offload
3004 * on VLAN interface also requires hardware checksum
3005 * offload of parent interface.
3007 if ((ifp->if_capenable & IFCAP_TXCSUM) == 0)
3008 ifp->if_capenable &= ~IFCAP_VLAN_HWCSUM;
3009 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) == 0)
3010 ifp->if_capenable &= ~IFCAP_VLAN_HWCSUM;
3011 // XXX VLAN_CAPABILITIES(ifp);
3014 error = ether_ioctl(ifp, cmd, data);
3022 alc_mac_config(struct alc_softc *sc)
3024 struct mii_data *mii;
3027 mii = device_get_softc(sc->alc_miibus);
3028 reg = CSR_READ_4(sc, ALC_MAC_CFG);
3029 reg &= ~(MAC_CFG_FULL_DUPLEX | MAC_CFG_TX_FC | MAC_CFG_RX_FC |
3030 MAC_CFG_SPEED_MASK);
3031 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3032 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
3033 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
3034 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
3035 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
3037 /* Reprogram MAC with resolved speed/duplex. */
3038 switch (IFM_SUBTYPE(mii->mii_media_active)) {
3041 reg |= MAC_CFG_SPEED_10_100;
3044 reg |= MAC_CFG_SPEED_1000;
3047 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_FDX) != 0) {
3048 reg |= MAC_CFG_FULL_DUPLEX;
3049 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_TXPAUSE) != 0)
3050 reg |= MAC_CFG_TX_FC;
3051 if ((IFM_OPTIONS(mii->mii_media_active) & IFM_ETH_RXPAUSE) != 0)
3052 reg |= MAC_CFG_RX_FC;
3054 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
3058 alc_stats_clear(struct alc_softc *sc)
3060 struct smb sb, *smb;
3064 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3065 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3066 sc->alc_cdata.alc_smb_map,
3067 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3068 smb = sc->alc_rdata.alc_smb;
3069 /* Update done, clear. */
3071 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3072 sc->alc_cdata.alc_smb_map,
3073 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3075 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3077 CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3078 i += sizeof(uint32_t);
3080 /* Read Tx statistics. */
3081 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3083 CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3084 i += sizeof(uint32_t);
3090 alc_stats_update(struct alc_softc *sc)
3092 struct alc_hw_stats *stat;
3093 struct smb sb, *smb;
3099 stat = &sc->alc_stats;
3100 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3101 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3102 sc->alc_cdata.alc_smb_map,
3103 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3104 smb = sc->alc_rdata.alc_smb;
3105 if (smb->updated == 0)
3109 /* Read Rx statistics. */
3110 for (reg = &sb.rx_frames, i = 0; reg <= &sb.rx_pkts_filtered;
3112 *reg = CSR_READ_4(sc, ALC_RX_MIB_BASE + i);
3113 i += sizeof(uint32_t);
3115 /* Read Tx statistics. */
3116 for (reg = &sb.tx_frames, i = 0; reg <= &sb.tx_mcast_bytes;
3118 *reg = CSR_READ_4(sc, ALC_TX_MIB_BASE + i);
3119 i += sizeof(uint32_t);
3124 stat->rx_frames += smb->rx_frames;
3125 stat->rx_bcast_frames += smb->rx_bcast_frames;
3126 stat->rx_mcast_frames += smb->rx_mcast_frames;
3127 stat->rx_pause_frames += smb->rx_pause_frames;
3128 stat->rx_control_frames += smb->rx_control_frames;
3129 stat->rx_crcerrs += smb->rx_crcerrs;
3130 stat->rx_lenerrs += smb->rx_lenerrs;
3131 stat->rx_bytes += smb->rx_bytes;
3132 stat->rx_runts += smb->rx_runts;
3133 stat->rx_fragments += smb->rx_fragments;
3134 stat->rx_pkts_64 += smb->rx_pkts_64;
3135 stat->rx_pkts_65_127 += smb->rx_pkts_65_127;
3136 stat->rx_pkts_128_255 += smb->rx_pkts_128_255;
3137 stat->rx_pkts_256_511 += smb->rx_pkts_256_511;
3138 stat->rx_pkts_512_1023 += smb->rx_pkts_512_1023;
3139 stat->rx_pkts_1024_1518 += smb->rx_pkts_1024_1518;
3140 stat->rx_pkts_1519_max += smb->rx_pkts_1519_max;
3141 stat->rx_pkts_truncated += smb->rx_pkts_truncated;
3142 stat->rx_fifo_oflows += smb->rx_fifo_oflows;
3143 stat->rx_rrs_errs += smb->rx_rrs_errs;
3144 stat->rx_alignerrs += smb->rx_alignerrs;
3145 stat->rx_bcast_bytes += smb->rx_bcast_bytes;
3146 stat->rx_mcast_bytes += smb->rx_mcast_bytes;
3147 stat->rx_pkts_filtered += smb->rx_pkts_filtered;
3150 stat->tx_frames += smb->tx_frames;
3151 stat->tx_bcast_frames += smb->tx_bcast_frames;
3152 stat->tx_mcast_frames += smb->tx_mcast_frames;
3153 stat->tx_pause_frames += smb->tx_pause_frames;
3154 stat->tx_excess_defer += smb->tx_excess_defer;
3155 stat->tx_control_frames += smb->tx_control_frames;
3156 stat->tx_deferred += smb->tx_deferred;
3157 stat->tx_bytes += smb->tx_bytes;
3158 stat->tx_pkts_64 += smb->tx_pkts_64;
3159 stat->tx_pkts_65_127 += smb->tx_pkts_65_127;
3160 stat->tx_pkts_128_255 += smb->tx_pkts_128_255;
3161 stat->tx_pkts_256_511 += smb->tx_pkts_256_511;
3162 stat->tx_pkts_512_1023 += smb->tx_pkts_512_1023;
3163 stat->tx_pkts_1024_1518 += smb->tx_pkts_1024_1518;
3164 stat->tx_pkts_1519_max += smb->tx_pkts_1519_max;
3165 stat->tx_single_colls += smb->tx_single_colls;
3166 stat->tx_multi_colls += smb->tx_multi_colls;
3167 stat->tx_late_colls += smb->tx_late_colls;
3168 stat->tx_excess_colls += smb->tx_excess_colls;
3169 stat->tx_underrun += smb->tx_underrun;
3170 stat->tx_desc_underrun += smb->tx_desc_underrun;
3171 stat->tx_lenerrs += smb->tx_lenerrs;
3172 stat->tx_pkts_truncated += smb->tx_pkts_truncated;
3173 stat->tx_bcast_bytes += smb->tx_bcast_bytes;
3174 stat->tx_mcast_bytes += smb->tx_mcast_bytes;
3176 /* Update counters in ifnet. */
3177 IFNET_STAT_INC(ifp, opackets, smb->tx_frames);
3179 IFNET_STAT_INC(ifp, collisions, smb->tx_single_colls +
3180 smb->tx_multi_colls * 2 + smb->tx_late_colls +
3181 smb->tx_excess_colls * HDPX_CFG_RETRY_DEFAULT);
3183 IFNET_STAT_INC(ifp, oerrors,
3184 smb->tx_excess_colls + smb->tx_late_colls + smb->tx_underrun);
3186 IFNET_STAT_INC(ifp, ipackets, smb->rx_frames);
3188 IFNET_STAT_INC(ifp, ierrors, smb->rx_crcerrs + smb->rx_lenerrs +
3189 smb->rx_runts + smb->rx_pkts_truncated +
3190 smb->rx_fifo_oflows + smb->rx_rrs_errs +
3193 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0) {
3194 /* Update done, clear. */
3196 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag,
3197 sc->alc_cdata.alc_smb_map,
3198 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3205 struct alc_softc *sc = arg;
3206 struct ifnet *ifp = &sc->arpcom.ac_if;
3209 ASSERT_SERIALIZED(ifp->if_serializer);
3211 status = CSR_READ_4(sc, ALC_INTR_STATUS);
3212 if ((status & ALC_INTRS) == 0)
3215 /* Acknowledge interrupts and disable interrupts. */
3216 CSR_WRITE_4(sc, ALC_INTR_STATUS, status | INTR_DIS_INT);
3218 if (ifp->if_flags & IFF_RUNNING) {
3219 if (status & INTR_RX_PKT) {
3220 if (alc_rxintr(sc)) {
3225 if (status & (INTR_DMA_RD_TO_RST | INTR_DMA_WR_TO_RST |
3227 if (status & INTR_DMA_RD_TO_RST) {
3229 "DMA read error! -- resetting\n");
3231 if (status & INTR_DMA_WR_TO_RST) {
3233 "DMA write error! -- resetting\n");
3235 if (status & INTR_TXQ_TO_RST)
3236 if_printf(ifp, "TxQ reset! -- resetting\n");
3240 if (!ifq_is_empty(&ifp->if_snd))
3243 /* Re-enable interrupts */
3244 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0x7FFFFFFF);
3249 alc_txeof(struct alc_softc *sc)
3252 struct alc_txdesc *txd;
3253 uint32_t cons, prod;
3258 if (sc->alc_cdata.alc_tx_cnt == 0)
3260 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
3261 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_POSTWRITE);
3262 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3263 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3264 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_POSTREAD);
3265 prod = sc->alc_rdata.alc_cmb->cons;
3267 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3268 prod = CSR_READ_2(sc, ALC_MBOX_TD_PRI0_CONS_IDX);
3270 prod = CSR_READ_4(sc, ALC_MBOX_TD_CONS_IDX);
3271 /* Assume we're using normal Tx priority queue. */
3272 prod = (prod & MBOX_TD_CONS_LO_IDX_MASK) >>
3273 MBOX_TD_CONS_LO_IDX_SHIFT;
3276 cons = sc->alc_cdata.alc_tx_cons;
3278 * Go through our Tx list and free mbufs for those
3279 * frames which have been transmitted.
3281 for (prog = 0; cons != prod; prog++,
3282 ALC_DESC_INC(cons, ALC_TX_RING_CNT)) {
3283 if (sc->alc_cdata.alc_tx_cnt <= 0)
3286 ifq_clr_oactive(&ifp->if_snd);
3287 sc->alc_cdata.alc_tx_cnt--;
3288 txd = &sc->alc_cdata.alc_txdesc[cons];
3289 if (txd->tx_m != NULL) {
3290 /* Reclaim transmitted mbufs. */
3291 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
3292 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
3293 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
3300 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
3301 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag,
3302 sc->alc_cdata.alc_cmb_map, BUS_DMASYNC_PREREAD);
3303 sc->alc_cdata.alc_tx_cons = cons;
3305 * Unarm watchdog timer only when there is no pending
3306 * frames in Tx queue.
3308 if (sc->alc_cdata.alc_tx_cnt == 0)
3309 sc->alc_watchdog_timer = 0;
3313 alc_newbuf(struct alc_softc *sc, struct alc_rxdesc *rxd, boolean_t wait)
3316 bus_dma_segment_t segs[1];
3321 m = m_getcl(wait ? M_WAITOK : M_NOWAIT, MT_DATA, M_PKTHDR);
3324 m->m_len = m->m_pkthdr.len = MCLBYTES;
3326 /* Hardware require 4 bytes align */
3327 m_adj(m, ETHER_ALIGN);
3330 error = bus_dmamap_load_mbuf_segment(
3331 sc->alc_cdata.alc_rx_tag,
3332 sc->alc_cdata.alc_rx_sparemap,
3333 m, segs, 1, &nsegs, BUS_DMA_NOWAIT);
3338 KASSERT(nsegs == 1, ("%s: %d segments returned!", __func__, nsegs));
3340 if (rxd->rx_m != NULL) {
3341 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3342 BUS_DMASYNC_POSTREAD);
3343 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap);
3345 map = rxd->rx_dmamap;
3346 rxd->rx_dmamap = sc->alc_cdata.alc_rx_sparemap;
3347 sc->alc_cdata.alc_rx_sparemap = map;
3348 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag, rxd->rx_dmamap,
3349 BUS_DMASYNC_PREREAD);
3351 rxd->rx_desc->addr = htole64(segs[0].ds_addr);
3356 alc_rxintr(struct alc_softc *sc)
3359 struct rx_rdesc *rrd;
3360 uint32_t nsegs, status;
3363 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3364 sc->alc_cdata.alc_rr_ring_map,
3365 BUS_DMASYNC_POSTREAD | BUS_DMASYNC_POSTWRITE);
3366 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3367 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_POSTWRITE);
3368 rr_cons = sc->alc_cdata.alc_rr_cons;
3370 for (prog = 0; (ifp->if_flags & IFF_RUNNING) != 0;) {
3371 rrd = &sc->alc_rdata.alc_rr_ring[rr_cons];
3372 status = le32toh(rrd->status);
3373 if ((status & RRD_VALID) == 0)
3375 nsegs = RRD_RD_CNT(le32toh(rrd->rdinfo));
3377 /* This should not happen! */
3378 device_printf(sc->alc_dev,
3379 "unexpected segment count -- resetting\n");
3383 /* Clear Rx return status. */
3385 ALC_DESC_INC(rr_cons, ALC_RR_RING_CNT);
3386 sc->alc_cdata.alc_rx_cons += nsegs;
3387 sc->alc_cdata.alc_rx_cons %= ALC_RR_RING_CNT;
3392 /* Update the consumer index. */
3393 sc->alc_cdata.alc_rr_cons = rr_cons;
3394 /* Sync Rx return descriptors. */
3395 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
3396 sc->alc_cdata.alc_rr_ring_map,
3397 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
3399 * Sync updated Rx descriptors such that controller see
3400 * modified buffer addresses.
3402 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
3403 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
3405 * Let controller know availability of new Rx buffers.
3406 * Since alc(4) use RXQ_CFG_RD_BURST_DEFAULT descriptors
3407 * it may be possible to update ALC_MBOX_RD0_PROD_IDX
3408 * only when Rx buffer pre-fetching is required. In
3409 * addition we already set ALC_RX_RD_FREE_THRESH to
3410 * RX_RD_FREE_THRESH_LO_DEFAULT descriptors. However
3411 * it still seems that pre-fetching needs more
3414 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3415 CSR_WRITE_2(sc, ALC_MBOX_RD0_PROD_IDX,
3416 (uint16_t)sc->alc_cdata.alc_rx_cons);
3418 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX,
3419 sc->alc_cdata.alc_rx_cons);
3425 /* Receive a frame. */
3427 alc_rxeof(struct alc_softc *sc, struct rx_rdesc *rrd)
3429 struct alc_rxdesc *rxd;
3431 struct mbuf *mp, *m;
3432 uint32_t rdinfo, status, vtag;
3433 int count, nsegs, rx_cons;
3436 status = le32toh(rrd->status);
3437 rdinfo = le32toh(rrd->rdinfo);
3438 rx_cons = RRD_RD_IDX(rdinfo);
3439 nsegs = RRD_RD_CNT(rdinfo);
3441 sc->alc_cdata.alc_rxlen = RRD_BYTES(status);
3442 if ((status & (RRD_ERR_SUM | RRD_ERR_LENGTH)) != 0) {
3444 * We want to pass the following frames to upper
3445 * layer regardless of error status of Rx return
3448 * o IP/TCP/UDP checksum is bad.
3449 * o frame length and protocol specific length
3452 * Force network stack compute checksum for
3455 status |= RRD_TCP_UDPCSUM_NOK | RRD_IPCSUM_NOK;
3456 if ((status & (RRD_ERR_CRC | RRD_ERR_ALIGN |
3457 RRD_ERR_TRUNC | RRD_ERR_RUNT)) != 0)
3461 for (count = 0; count < nsegs; count++,
3462 ALC_DESC_INC(rx_cons, ALC_RX_RING_CNT)) {
3463 rxd = &sc->alc_cdata.alc_rxdesc[rx_cons];
3465 /* Add a new receive buffer to the ring. */
3466 if (alc_newbuf(sc, rxd, FALSE) != 0) {
3467 IFNET_STAT_INC(ifp, iqdrops, 1);
3468 /* Reuse Rx buffers. */
3469 if (sc->alc_cdata.alc_rxhead != NULL)
3470 m_freem(sc->alc_cdata.alc_rxhead);
3475 * Assume we've received a full sized frame.
3476 * Actual size is fixed when we encounter the end of
3477 * multi-segmented frame.
3479 mp->m_len = sc->alc_buf_size;
3481 /* Chain received mbufs. */
3482 if (sc->alc_cdata.alc_rxhead == NULL) {
3483 sc->alc_cdata.alc_rxhead = mp;
3484 sc->alc_cdata.alc_rxtail = mp;
3486 /*mp->m_flags &= ~M_PKTHDR;*/
3487 sc->alc_cdata.alc_rxprev_tail =
3488 sc->alc_cdata.alc_rxtail;
3489 sc->alc_cdata.alc_rxtail->m_next = mp;
3490 sc->alc_cdata.alc_rxtail = mp;
3493 if (count == nsegs - 1) {
3494 /* Last desc. for this frame. */
3495 m = sc->alc_cdata.alc_rxhead;
3496 /*m->m_flags |= M_PKTHDR;*/
3499 * It seems that L1C/L2C controller has no way
3500 * to tell hardware to strip CRC bytes.
3503 sc->alc_cdata.alc_rxlen - ETHER_CRC_LEN;
3505 /* Set last mbuf size. */
3506 mp->m_len = sc->alc_cdata.alc_rxlen -
3507 (nsegs - 1) * sc->alc_buf_size;
3508 /* Remove the CRC bytes in chained mbufs. */
3509 if (mp->m_len <= ETHER_CRC_LEN) {
3510 sc->alc_cdata.alc_rxtail =
3511 sc->alc_cdata.alc_rxprev_tail;
3512 sc->alc_cdata.alc_rxtail->m_len -=
3513 (ETHER_CRC_LEN - mp->m_len);
3514 sc->alc_cdata.alc_rxtail->m_next = NULL;
3517 mp->m_len -= ETHER_CRC_LEN;
3520 m->m_len = m->m_pkthdr.len;
3521 m->m_pkthdr.rcvif = ifp;
3523 * Due to hardware bugs, Rx checksum offloading
3524 * was intentionally disabled.
3526 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0 &&
3527 (status & RRD_VLAN_TAG) != 0) {
3528 vtag = RRD_VLAN(le32toh(rrd->vtag));
3529 m->m_pkthdr.ether_vlantag = ntohs(vtag);
3530 m->m_flags |= M_VLANTAG;
3534 ifp->if_input(ifp, m, NULL, -1);
3537 /* Reset mbuf chains. */
3538 ALC_RXCHAIN_RESET(sc);
3544 struct alc_softc *sc = arg;
3545 struct ifnet *ifp = &sc->arpcom.ac_if;
3546 struct mii_data *mii;
3548 lwkt_serialize_enter(ifp->if_serializer);
3550 mii = device_get_softc(sc->alc_miibus);
3552 alc_stats_update(sc);
3554 * alc(4) does not rely on Tx completion interrupts to reclaim
3555 * transferred buffers. Instead Tx completion interrupts are
3556 * used to hint for scheduling Tx task. So it's necessary to
3557 * release transmitted buffers by kicking Tx completion
3558 * handler. This limits the maximum reclamation delay to a hz.
3562 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
3565 /* poll for debugging */
3569 lwkt_serialize_exit(ifp->if_serializer);
3573 alc_osc_reset(struct alc_softc *sc)
3577 reg = CSR_READ_4(sc, ALC_MISC3);
3578 reg &= ~MISC3_25M_BY_SW;
3579 reg |= MISC3_25M_NOTO_INTNL;
3580 CSR_WRITE_4(sc, ALC_MISC3, reg);
3582 reg = CSR_READ_4(sc, ALC_MISC);
3583 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0) {
3585 * Restore over-current protection default value.
3586 * This value could be reset by MAC reset.
3588 reg &= ~MISC_PSW_OCP_MASK;
3589 reg |= (MISC_PSW_OCP_DEFAULT << MISC_PSW_OCP_SHIFT);
3590 reg &= ~MISC_INTNLOSC_OPEN;
3591 CSR_WRITE_4(sc, ALC_MISC, reg);
3592 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3593 reg = CSR_READ_4(sc, ALC_MISC2);
3594 reg &= ~MISC2_CALB_START;
3595 CSR_WRITE_4(sc, ALC_MISC2, reg);
3596 CSR_WRITE_4(sc, ALC_MISC2, reg | MISC2_CALB_START);
3599 reg &= ~MISC_INTNLOSC_OPEN;
3600 /* Disable isolate for revision A devices. */
3601 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3602 reg &= ~MISC_ISO_ENB;
3603 CSR_WRITE_4(sc, ALC_MISC, reg | MISC_INTNLOSC_OPEN);
3604 CSR_WRITE_4(sc, ALC_MISC, reg);
3611 alc_reset(struct alc_softc *sc)
3613 uint32_t pmcfg, reg;
3617 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3618 /* Reset workaround. */
3619 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, 1);
3620 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3621 (sc->alc_rev & 0x01) != 0) {
3622 /* Disable L0s/L1s before reset. */
3623 pmcfg = CSR_READ_4(sc, ALC_PM_CFG);
3624 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3626 pmcfg &= ~(PM_CFG_ASPM_L0S_ENB |
3627 PM_CFG_ASPM_L1_ENB);
3628 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3632 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3633 reg |= MASTER_OOB_DIS_OFF | MASTER_RESET;
3634 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3636 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3637 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3639 if (CSR_READ_4(sc, ALC_MBOX_RD0_PROD_IDX) == 0)
3643 device_printf(sc->alc_dev, "MAC reset timeout!\n");
3646 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3648 if ((CSR_READ_4(sc, ALC_MASTER_CFG) & MASTER_RESET) == 0)
3652 device_printf(sc->alc_dev, "master reset timeout!\n");
3654 for (i = ALC_RESET_TIMEOUT; i > 0; i--) {
3655 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
3656 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC |
3657 IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
3663 device_printf(sc->alc_dev, "reset timeout(0x%08x)!\n", reg);
3665 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3666 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1 &&
3667 (sc->alc_rev & 0x01) != 0) {
3668 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3669 reg |= MASTER_CLK_SEL_DIS;
3670 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3671 /* Restore L0s/L1s config. */
3672 if ((pmcfg & (PM_CFG_ASPM_L0S_ENB | PM_CFG_ASPM_L1_ENB))
3674 CSR_WRITE_4(sc, ALC_PM_CFG, pmcfg);
3678 reg = CSR_READ_4(sc, ALC_MISC3);
3679 reg &= ~MISC3_25M_BY_SW;
3680 reg |= MISC3_25M_NOTO_INTNL;
3681 CSR_WRITE_4(sc, ALC_MISC3, reg);
3682 reg = CSR_READ_4(sc, ALC_MISC);
3683 reg &= ~MISC_INTNLOSC_OPEN;
3684 if (AR816X_REV(sc->alc_rev) <= AR816X_REV_A1)
3685 reg &= ~MISC_ISO_ENB;
3686 CSR_WRITE_4(sc, ALC_MISC, reg);
3689 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
3690 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3691 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2)
3692 CSR_WRITE_4(sc, ALC_SERDES_LOCK,
3693 CSR_READ_4(sc, ALC_SERDES_LOCK) | SERDES_MAC_CLK_SLOWDOWN |
3694 SERDES_PHY_CLK_SLOWDOWN);
3700 struct alc_softc *sc = xsc;
3701 struct ifnet *ifp = &sc->arpcom.ac_if;
3702 struct mii_data *mii;
3703 uint8_t eaddr[ETHER_ADDR_LEN];
3705 uint32_t reg, rxf_hi, rxf_lo;
3707 ASSERT_SERIALIZED(ifp->if_serializer);
3709 mii = device_get_softc(sc->alc_miibus);
3712 * Cancel any pending I/O.
3716 * Reset the chip to a known state.
3720 /* Initialize Rx descriptors. */
3721 if (alc_init_rx_ring(sc) != 0) {
3722 device_printf(sc->alc_dev, "no memory for Rx buffers.\n");
3726 alc_init_rr_ring(sc);
3727 alc_init_tx_ring(sc);
3731 /* Enable all clocks. */
3732 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3733 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, CLK_GATING_DMAW_ENB |
3734 CLK_GATING_DMAR_ENB | CLK_GATING_TXQ_ENB |
3735 CLK_GATING_RXQ_ENB | CLK_GATING_TXMAC_ENB |
3736 CLK_GATING_RXMAC_ENB);
3737 if (AR816X_REV(sc->alc_rev) >= AR816X_REV_B0)
3738 CSR_WRITE_4(sc, ALC_IDLE_DECISN_TIMER,
3739 IDLE_DECISN_TIMER_DEFAULT_1MS);
3741 CSR_WRITE_4(sc, ALC_CLK_GATING_CFG, 0);
3743 /* Reprogram the station address. */
3744 bcopy(IF_LLADDR(ifp), eaddr, ETHER_ADDR_LEN);
3745 CSR_WRITE_4(sc, ALC_PAR0,
3746 eaddr[2] << 24 | eaddr[3] << 16 | eaddr[4] << 8 | eaddr[5]);
3747 CSR_WRITE_4(sc, ALC_PAR1, eaddr[0] << 8 | eaddr[1]);
3749 * Clear WOL status and disable all WOL feature as WOL
3750 * would interfere Rx operation under normal environments.
3752 CSR_READ_4(sc, ALC_WOL_CFG);
3753 CSR_WRITE_4(sc, ALC_WOL_CFG, 0);
3754 /* Set Tx descriptor base addresses. */
3755 paddr = sc->alc_rdata.alc_tx_ring_paddr;
3756 CSR_WRITE_4(sc, ALC_TX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3757 CSR_WRITE_4(sc, ALC_TDL_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3758 /* We don't use high priority ring. */
3759 CSR_WRITE_4(sc, ALC_TDH_HEAD_ADDR_LO, 0);
3760 /* Set Tx descriptor counter. */
3761 CSR_WRITE_4(sc, ALC_TD_RING_CNT,
3762 (ALC_TX_RING_CNT << TD_RING_CNT_SHIFT) & TD_RING_CNT_MASK);
3763 /* Set Rx descriptor base addresses. */
3764 paddr = sc->alc_rdata.alc_rx_ring_paddr;
3765 CSR_WRITE_4(sc, ALC_RX_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3766 CSR_WRITE_4(sc, ALC_RD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3767 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3768 /* We use one Rx ring. */
3769 CSR_WRITE_4(sc, ALC_RD1_HEAD_ADDR_LO, 0);
3770 CSR_WRITE_4(sc, ALC_RD2_HEAD_ADDR_LO, 0);
3771 CSR_WRITE_4(sc, ALC_RD3_HEAD_ADDR_LO, 0);
3773 /* Set Rx descriptor counter. */
3774 CSR_WRITE_4(sc, ALC_RD_RING_CNT,
3775 (ALC_RX_RING_CNT << RD_RING_CNT_SHIFT) & RD_RING_CNT_MASK);
3778 * Let hardware split jumbo frames into alc_max_buf_sized chunks.
3779 * if it do not fit the buffer size. Rx return descriptor holds
3780 * a counter that indicates how many fragments were made by the
3781 * hardware. The buffer size should be multiple of 8 bytes.
3782 * Since hardware has limit on the size of buffer size, always
3783 * use the maximum value.
3784 * For strict-alignment architectures make sure to reduce buffer
3785 * size by 8 bytes to make room for alignment fixup.
3787 sc->alc_buf_size = RX_BUF_SIZE_MAX;
3788 CSR_WRITE_4(sc, ALC_RX_BUF_SIZE, sc->alc_buf_size);
3790 paddr = sc->alc_rdata.alc_rr_ring_paddr;
3791 /* Set Rx return descriptor base addresses. */
3792 CSR_WRITE_4(sc, ALC_RRD0_HEAD_ADDR_LO, ALC_ADDR_LO(paddr));
3793 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3794 /* We use one Rx return ring. */
3795 CSR_WRITE_4(sc, ALC_RRD1_HEAD_ADDR_LO, 0);
3796 CSR_WRITE_4(sc, ALC_RRD2_HEAD_ADDR_LO, 0);
3797 CSR_WRITE_4(sc, ALC_RRD3_HEAD_ADDR_LO, 0);
3799 /* Set Rx return descriptor counter. */
3800 CSR_WRITE_4(sc, ALC_RRD_RING_CNT,
3801 (ALC_RR_RING_CNT << RRD_RING_CNT_SHIFT) & RRD_RING_CNT_MASK);
3802 paddr = sc->alc_rdata.alc_cmb_paddr;
3803 CSR_WRITE_4(sc, ALC_CMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
3804 paddr = sc->alc_rdata.alc_smb_paddr;
3805 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_HI, ALC_ADDR_HI(paddr));
3806 CSR_WRITE_4(sc, ALC_SMB_BASE_ADDR_LO, ALC_ADDR_LO(paddr));
3808 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B) {
3809 /* Reconfigure SRAM - Vendor magic. */
3810 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_LEN, 0x000002A0);
3811 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_LEN, 0x00000100);
3812 CSR_WRITE_4(sc, ALC_SRAM_RX_FIFO_ADDR, 0x029F0000);
3813 CSR_WRITE_4(sc, ALC_SRAM_RD0_ADDR, 0x02BF02A0);
3814 CSR_WRITE_4(sc, ALC_SRAM_TX_FIFO_ADDR, 0x03BF02C0);
3815 CSR_WRITE_4(sc, ALC_SRAM_TD_ADDR, 0x03DF03C0);
3816 CSR_WRITE_4(sc, ALC_TXF_WATER_MARK, 0x00000000);
3817 CSR_WRITE_4(sc, ALC_RD_DMA_CFG, 0x00000000);
3820 /* Tell hardware that we're ready to load DMA blocks. */
3821 CSR_WRITE_4(sc, ALC_DMA_BLOCK, DMA_BLOCK_LOAD);
3823 /* Configure interrupt moderation timer. */
3824 reg = ALC_USECS(sc->alc_int_rx_mod) << IM_TIMER_RX_SHIFT;
3825 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0)
3826 reg |= ALC_USECS(sc->alc_int_tx_mod) << IM_TIMER_TX_SHIFT;
3827 CSR_WRITE_4(sc, ALC_IM_TIMER, reg);
3829 * We don't want to automatic interrupt clear as task queue
3830 * for the interrupt should know interrupt status.
3832 reg = CSR_READ_4(sc, ALC_MASTER_CFG);
3833 reg &= ~(MASTER_IM_RX_TIMER_ENB | MASTER_IM_TX_TIMER_ENB);
3834 reg |= MASTER_SA_TIMER_ENB;
3835 if (ALC_USECS(sc->alc_int_rx_mod) != 0)
3836 reg |= MASTER_IM_RX_TIMER_ENB;
3837 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0 &&
3838 ALC_USECS(sc->alc_int_tx_mod) != 0)
3839 reg |= MASTER_IM_TX_TIMER_ENB;
3840 CSR_WRITE_4(sc, ALC_MASTER_CFG, reg);
3842 * Disable interrupt re-trigger timer. We don't want automatic
3843 * re-triggering of un-ACKed interrupts.
3845 CSR_WRITE_4(sc, ALC_INTR_RETRIG_TIMER, ALC_USECS(0));
3846 /* Configure CMB. */
3847 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3848 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, ALC_TX_RING_CNT / 3);
3849 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER,
3850 ALC_USECS(sc->alc_int_tx_mod));
3852 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0) {
3853 CSR_WRITE_4(sc, ALC_CMB_TD_THRESH, 4);
3854 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(5000));
3856 CSR_WRITE_4(sc, ALC_CMB_TX_TIMER, ALC_USECS(0));
3860 * Hardware can be configured to issue SMB interrupt based
3861 * on programmed interval. Since there is a callout that is
3862 * invoked for every hz in driver we use that instead of
3863 * relying on periodic SMB interrupt.
3865 CSR_WRITE_4(sc, ALC_SMB_STAT_TIMER, ALC_USECS(0));
3866 /* Clear MAC statistics. */
3867 alc_stats_clear(sc);
3870 * Always use maximum frame size that controller can support.
3871 * Otherwise received frames that has larger frame length
3872 * than alc(4) MTU would be silently dropped in hardware. This
3873 * would make path-MTU discovery hard as sender wouldn't get
3874 * any responses from receiver. alc(4) supports
3875 * multi-fragmented frames on Rx path so it has no issue on
3876 * assembling fragmented frames. Using maximum frame size also
3877 * removes the need to reinitialize hardware when interface
3878 * MTU configuration was changed.
3880 * Be conservative in what you do, be liberal in what you
3881 * accept from others - RFC 793.
3883 CSR_WRITE_4(sc, ALC_FRAME_SIZE, sc->alc_ident->max_framelen);
3885 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3886 /* Disable header split(?) */
3887 CSR_WRITE_4(sc, ALC_HDS_CFG, 0);
3889 /* Configure IPG/IFG parameters. */
3890 CSR_WRITE_4(sc, ALC_IPG_IFG_CFG,
3891 ((IPG_IFG_IPGT_DEFAULT << IPG_IFG_IPGT_SHIFT) &
3892 IPG_IFG_IPGT_MASK) |
3893 ((IPG_IFG_MIFG_DEFAULT << IPG_IFG_MIFG_SHIFT) &
3894 IPG_IFG_MIFG_MASK) |
3895 ((IPG_IFG_IPG1_DEFAULT << IPG_IFG_IPG1_SHIFT) &
3896 IPG_IFG_IPG1_MASK) |
3897 ((IPG_IFG_IPG2_DEFAULT << IPG_IFG_IPG2_SHIFT) &
3898 IPG_IFG_IPG2_MASK));
3899 /* Set parameters for half-duplex media. */
3900 CSR_WRITE_4(sc, ALC_HDPX_CFG,
3901 ((HDPX_CFG_LCOL_DEFAULT << HDPX_CFG_LCOL_SHIFT) &
3902 HDPX_CFG_LCOL_MASK) |
3903 ((HDPX_CFG_RETRY_DEFAULT << HDPX_CFG_RETRY_SHIFT) &
3904 HDPX_CFG_RETRY_MASK) | HDPX_CFG_EXC_DEF_EN |
3905 ((HDPX_CFG_ABEBT_DEFAULT << HDPX_CFG_ABEBT_SHIFT) &
3906 HDPX_CFG_ABEBT_MASK) |
3907 ((HDPX_CFG_JAMIPG_DEFAULT << HDPX_CFG_JAMIPG_SHIFT) &
3908 HDPX_CFG_JAMIPG_MASK));
3912 * Set TSO/checksum offload threshold. For frames that is
3913 * larger than this threshold, hardware wouldn't do
3914 * TSO/checksum offloading.
3916 reg = (sc->alc_ident->max_framelen >> TSO_OFFLOAD_THRESH_UNIT_SHIFT) &
3917 TSO_OFFLOAD_THRESH_MASK;
3918 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3919 reg |= TSO_OFFLOAD_ERRLGPKT_DROP_ENB;
3920 CSR_WRITE_4(sc, ALC_TSO_OFFLOAD_THRESH, reg);
3921 /* Configure TxQ. */
3922 reg = (alc_dma_burst[sc->alc_dma_rd_burst] <<
3923 TXQ_CFG_TX_FIFO_BURST_SHIFT) & TXQ_CFG_TX_FIFO_BURST_MASK;
3924 if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B ||
3925 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
3928 reg |= (TXQ_CFG_TD_BURST_DEFAULT << TXQ_CFG_TD_BURST_SHIFT) &
3929 TXQ_CFG_TD_BURST_MASK;
3930 reg |= TXQ_CFG_IP_OPTION_ENB | TXQ_CFG_8023_ENB;
3931 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg | TXQ_CFG_ENHANCED_MODE);
3933 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3934 reg = (TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q1_BURST_SHIFT |
3935 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q2_BURST_SHIFT |
3936 TXQ_CFG_TD_BURST_DEFAULT << HQTD_CFG_Q3_BURST_SHIFT |
3937 HQTD_CFG_BURST_ENB);
3938 CSR_WRITE_4(sc, ALC_HQTD_CFG, reg);
3939 reg = WRR_PRI_RESTRICT_NONE;
3940 reg |= (WRR_PRI_DEFAULT << WRR_PRI0_SHIFT |
3941 WRR_PRI_DEFAULT << WRR_PRI1_SHIFT |
3942 WRR_PRI_DEFAULT << WRR_PRI2_SHIFT |
3943 WRR_PRI_DEFAULT << WRR_PRI3_SHIFT);
3944 CSR_WRITE_4(sc, ALC_WRR, reg);
3946 /* Configure Rx free descriptor pre-fetching. */
3947 CSR_WRITE_4(sc, ALC_RX_RD_FREE_THRESH,
3948 ((RX_RD_FREE_THRESH_HI_DEFAULT <<
3949 RX_RD_FREE_THRESH_HI_SHIFT) & RX_RD_FREE_THRESH_HI_MASK) |
3950 ((RX_RD_FREE_THRESH_LO_DEFAULT <<
3951 RX_RD_FREE_THRESH_LO_SHIFT) & RX_RD_FREE_THRESH_LO_MASK));
3955 * Configure flow control parameters.
3956 * XON : 80% of Rx FIFO
3957 * XOFF : 30% of Rx FIFO
3959 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
3960 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
3961 reg &= SRAM_RX_FIFO_LEN_MASK;
3964 reg -= RX_FIFO_PAUSE_816X_RSVD;
3966 reg -= RX_BUF_SIZE_MAX;
3968 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
3969 ((reg << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
3970 RX_FIFO_PAUSE_THRESH_LO_MASK) |
3971 (((RX_FIFO_PAUSE_816X_RSVD / 8) <<
3972 RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
3973 RX_FIFO_PAUSE_THRESH_HI_MASK));
3974 } else if (sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8131 ||
3975 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8132) {
3976 reg = CSR_READ_4(sc, ALC_SRAM_RX_FIFO_LEN);
3977 rxf_hi = (reg * 8) / 10;
3978 rxf_lo = (reg * 3) / 10;
3979 CSR_WRITE_4(sc, ALC_RX_FIFO_PAUSE_THRESH,
3980 ((rxf_lo << RX_FIFO_PAUSE_THRESH_LO_SHIFT) &
3981 RX_FIFO_PAUSE_THRESH_LO_MASK) |
3982 ((rxf_hi << RX_FIFO_PAUSE_THRESH_HI_SHIFT) &
3983 RX_FIFO_PAUSE_THRESH_HI_MASK));
3986 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
3987 /* Disable RSS until I understand L1C/L2C's RSS logic. */
3988 CSR_WRITE_4(sc, ALC_RSS_IDT_TABLE0, 0);
3989 CSR_WRITE_4(sc, ALC_RSS_CPU, 0);
3992 /* Configure RxQ. */
3993 reg = (RXQ_CFG_RD_BURST_DEFAULT << RXQ_CFG_RD_BURST_SHIFT) &
3994 RXQ_CFG_RD_BURST_MASK;
3995 reg |= RXQ_CFG_RSS_MODE_DIS;
3996 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0)
3997 reg |= (RXQ_CFG_816X_IDT_TBL_SIZE_DEFAULT <<
3998 RXQ_CFG_816X_IDT_TBL_SIZE_SHIFT) &
3999 RXQ_CFG_816X_IDT_TBL_SIZE_MASK;
4000 if ((sc->alc_flags & ALC_FLAG_FASTETHER) == 0 &&
4001 sc->alc_ident->deviceid != DEVICEID_ATHEROS_AR8151_V2)
4002 reg |= RXQ_CFG_ASPM_THROUGHPUT_LIMIT_1M;
4003 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4005 /* Configure DMA parameters. */
4006 reg = DMA_CFG_OUT_ORDER | DMA_CFG_RD_REQ_PRI;
4008 if ((sc->alc_flags & ALC_FLAG_CMB_BUG) == 0)
4009 reg |= DMA_CFG_CMB_ENB;
4010 if ((sc->alc_flags & ALC_FLAG_SMB_BUG) == 0)
4011 reg |= DMA_CFG_SMB_ENB;
4013 reg |= DMA_CFG_SMB_DIS;
4014 reg |= (sc->alc_dma_rd_burst & DMA_CFG_RD_BURST_MASK) <<
4015 DMA_CFG_RD_BURST_SHIFT;
4016 reg |= (sc->alc_dma_wr_burst & DMA_CFG_WR_BURST_MASK) <<
4017 DMA_CFG_WR_BURST_SHIFT;
4018 reg |= (DMA_CFG_RD_DELAY_CNT_DEFAULT << DMA_CFG_RD_DELAY_CNT_SHIFT) &
4019 DMA_CFG_RD_DELAY_CNT_MASK;
4020 reg |= (DMA_CFG_WR_DELAY_CNT_DEFAULT << DMA_CFG_WR_DELAY_CNT_SHIFT) &
4021 DMA_CFG_WR_DELAY_CNT_MASK;
4022 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0) {
4023 switch (AR816X_REV(sc->alc_rev)) {
4026 reg |= DMA_CFG_RD_CHNL_SEL_1;
4031 reg |= DMA_CFG_RD_CHNL_SEL_3;
4035 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4038 * Configure Tx/Rx MACs.
4039 * - Auto-padding for short frames.
4040 * - Enable CRC generation.
4041 * Actual reconfiguration of MAC for resolved speed/duplex
4042 * is followed after detection of link establishment.
4043 * AR813x/AR815x always does checksum computation regardless
4044 * of MAC_CFG_RXCSUM_ENB bit. Also the controller is known to
4045 * have bug in protocol field in Rx return structure so
4046 * these controllers can't handle fragmented frames. Disable
4047 * Rx checksum offloading until there is a newer controller
4048 * that has sane implementation.
4050 reg = MAC_CFG_TX_CRC_ENB | MAC_CFG_TX_AUTO_PAD | MAC_CFG_FULL_DUPLEX |
4051 ((MAC_CFG_PREAMBLE_DEFAULT << MAC_CFG_PREAMBLE_SHIFT) &
4052 MAC_CFG_PREAMBLE_MASK);
4053 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) != 0 ||
4054 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151 ||
4055 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8151_V2 ||
4056 sc->alc_ident->deviceid == DEVICEID_ATHEROS_AR8152_B2) {
4057 reg |= MAC_CFG_HASH_ALG_CRC32 | MAC_CFG_SPEED_MODE_SW;
4059 if ((sc->alc_flags & ALC_FLAG_FASTETHER) != 0)
4060 reg |= MAC_CFG_SPEED_10_100;
4062 reg |= MAC_CFG_SPEED_1000;
4063 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4065 /* Set up the receive filter. */
4069 /* Acknowledge all pending interrupts and clear it. */
4070 CSR_WRITE_4(sc, ALC_INTR_MASK, ALC_INTRS);
4071 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4072 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0);
4074 ifp->if_flags |= IFF_RUNNING;
4075 ifq_clr_oactive(&ifp->if_snd);
4077 sc->alc_flags &= ~ALC_FLAG_LINK;
4078 /* Switch to the current media. */
4079 /*mii_mediachg(mii);*/
4080 alc_mediachange_locked(sc);
4082 callout_reset(&sc->alc_tick_ch, hz, alc_tick, sc);
4087 alc_stop(struct alc_softc *sc)
4089 struct ifnet *ifp = &sc->arpcom.ac_if;
4090 struct alc_txdesc *txd;
4091 struct alc_rxdesc *rxd;
4095 ASSERT_SERIALIZED(ifp->if_serializer);
4098 * Mark the interface down and cancel the watchdog timer.
4100 ifp->if_flags &= ~IFF_RUNNING;
4101 ifq_clr_oactive(&ifp->if_snd);
4102 sc->alc_flags &= ~ALC_FLAG_LINK;
4103 callout_stop(&sc->alc_tick_ch);
4104 sc->alc_watchdog_timer = 0;
4105 alc_stats_update(sc);
4106 /* Disable interrupts. */
4107 CSR_WRITE_4(sc, ALC_INTR_MASK, 0);
4108 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4110 reg = CSR_READ_4(sc, ALC_DMA_CFG);
4111 reg &= ~(DMA_CFG_CMB_ENB | DMA_CFG_SMB_ENB);
4112 reg |= DMA_CFG_SMB_DIS;
4113 CSR_WRITE_4(sc, ALC_DMA_CFG, reg);
4115 /* Stop Rx/Tx MACs. */
4117 /* Disable interrupts which might be touched in taskq handler. */
4118 CSR_WRITE_4(sc, ALC_INTR_STATUS, 0xFFFFFFFF);
4120 /* Disable L0s/L1s */
4121 alc_aspm(sc, 0, IFM_UNKNOWN);
4122 /* Reclaim Rx buffers that have been processed. */
4123 if (sc->alc_cdata.alc_rxhead != NULL)
4124 m_freem(sc->alc_cdata.alc_rxhead);
4125 ALC_RXCHAIN_RESET(sc);
4127 * Free Tx/Rx mbufs still in the queues.
4129 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4130 rxd = &sc->alc_cdata.alc_rxdesc[i];
4131 if (rxd->rx_m != NULL) {
4132 bus_dmamap_sync(sc->alc_cdata.alc_rx_tag,
4133 rxd->rx_dmamap, BUS_DMASYNC_POSTREAD);
4134 bus_dmamap_unload(sc->alc_cdata.alc_rx_tag,
4140 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4141 txd = &sc->alc_cdata.alc_txdesc[i];
4142 if (txd->tx_m != NULL) {
4143 bus_dmamap_sync(sc->alc_cdata.alc_tx_tag,
4144 txd->tx_dmamap, BUS_DMASYNC_POSTWRITE);
4145 bus_dmamap_unload(sc->alc_cdata.alc_tx_tag,
4154 alc_stop_mac(struct alc_softc *sc)
4160 /* Disable Rx/Tx MAC. */
4161 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4162 if ((reg & (MAC_CFG_TX_ENB | MAC_CFG_RX_ENB)) != 0) {
4163 reg &= ~(MAC_CFG_TX_ENB | MAC_CFG_RX_ENB);
4164 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4166 for (i = ALC_TIMEOUT; i > 0; i--) {
4167 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4168 if ((reg & (IDLE_STATUS_RXMAC | IDLE_STATUS_TXMAC)) == 0)
4173 device_printf(sc->alc_dev,
4174 "could not disable Rx/Tx MAC(0x%08x)!\n", reg);
4178 alc_start_queue(struct alc_softc *sc)
4183 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB,
4184 RXQ_CFG_QUEUE0_ENB | RXQ_CFG_QUEUE1_ENB | RXQ_CFG_QUEUE2_ENB,
4190 cfg = CSR_READ_4(sc, ALC_RXQ_CFG);
4191 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4192 cfg &= ~RXQ_CFG_ENB;
4195 cfg |= RXQ_CFG_QUEUE0_ENB;
4196 CSR_WRITE_4(sc, ALC_RXQ_CFG, cfg);
4198 cfg = CSR_READ_4(sc, ALC_TXQ_CFG);
4200 CSR_WRITE_4(sc, ALC_TXQ_CFG, cfg);
4204 alc_stop_queue(struct alc_softc *sc)
4210 reg = CSR_READ_4(sc, ALC_RXQ_CFG);
4211 if ((sc->alc_flags & ALC_FLAG_AR816X_FAMILY) == 0) {
4212 if ((reg & RXQ_CFG_ENB) != 0) {
4213 reg &= ~RXQ_CFG_ENB;
4214 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4217 if ((reg & RXQ_CFG_QUEUE0_ENB) != 0) {
4218 reg &= ~RXQ_CFG_QUEUE0_ENB;
4219 CSR_WRITE_4(sc, ALC_RXQ_CFG, reg);
4223 reg = CSR_READ_4(sc, ALC_TXQ_CFG);
4224 if ((reg & TXQ_CFG_ENB) != 0) {
4225 reg &= ~TXQ_CFG_ENB;
4226 CSR_WRITE_4(sc, ALC_TXQ_CFG, reg);
4229 for (i = ALC_TIMEOUT; i > 0; i--) {
4230 reg = CSR_READ_4(sc, ALC_IDLE_STATUS);
4231 if ((reg & (IDLE_STATUS_RXQ | IDLE_STATUS_TXQ)) == 0)
4236 device_printf(sc->alc_dev,
4237 "could not disable RxQ/TxQ (0x%08x)!\n", reg);
4241 alc_init_tx_ring(struct alc_softc *sc)
4243 struct alc_ring_data *rd;
4244 struct alc_txdesc *txd;
4247 sc->alc_cdata.alc_tx_prod = 0;
4248 sc->alc_cdata.alc_tx_cons = 0;
4249 sc->alc_cdata.alc_tx_cnt = 0;
4251 rd = &sc->alc_rdata;
4252 bzero(rd->alc_tx_ring, ALC_TX_RING_SZ);
4253 for (i = 0; i < ALC_TX_RING_CNT; i++) {
4254 txd = &sc->alc_cdata.alc_txdesc[i];
4258 bus_dmamap_sync(sc->alc_cdata.alc_tx_ring_tag,
4259 sc->alc_cdata.alc_tx_ring_map, BUS_DMASYNC_PREWRITE);
4263 alc_init_rx_ring(struct alc_softc *sc)
4265 struct alc_ring_data *rd;
4266 struct alc_rxdesc *rxd;
4269 sc->alc_cdata.alc_rx_cons = ALC_RX_RING_CNT - 1;
4270 rd = &sc->alc_rdata;
4271 bzero(rd->alc_rx_ring, ALC_RX_RING_SZ);
4272 for (i = 0; i < ALC_RX_RING_CNT; i++) {
4273 rxd = &sc->alc_cdata.alc_rxdesc[i];
4275 rxd->rx_desc = &rd->alc_rx_ring[i];
4276 if (alc_newbuf(sc, rxd, TRUE) != 0)
4281 * Since controller does not update Rx descriptors, driver
4282 * does have to read Rx descriptors back so BUS_DMASYNC_PREWRITE
4283 * is enough to ensure coherence.
4285 bus_dmamap_sync(sc->alc_cdata.alc_rx_ring_tag,
4286 sc->alc_cdata.alc_rx_ring_map, BUS_DMASYNC_PREWRITE);
4287 /* Let controller know availability of new Rx buffers. */
4288 CSR_WRITE_4(sc, ALC_MBOX_RD0_PROD_IDX, sc->alc_cdata.alc_rx_cons);
4294 alc_init_rr_ring(struct alc_softc *sc)
4296 struct alc_ring_data *rd;
4298 sc->alc_cdata.alc_rr_cons = 0;
4299 ALC_RXCHAIN_RESET(sc);
4301 rd = &sc->alc_rdata;
4302 bzero(rd->alc_rr_ring, ALC_RR_RING_SZ);
4303 bus_dmamap_sync(sc->alc_cdata.alc_rr_ring_tag,
4304 sc->alc_cdata.alc_rr_ring_map,
4305 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4309 alc_init_cmb(struct alc_softc *sc)
4311 struct alc_ring_data *rd;
4313 rd = &sc->alc_rdata;
4314 bzero(rd->alc_cmb, ALC_CMB_SZ);
4315 bus_dmamap_sync(sc->alc_cdata.alc_cmb_tag, sc->alc_cdata.alc_cmb_map,
4316 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4320 alc_init_smb(struct alc_softc *sc)
4322 struct alc_ring_data *rd;
4324 rd = &sc->alc_rdata;
4325 bzero(rd->alc_smb, ALC_SMB_SZ);
4326 bus_dmamap_sync(sc->alc_cdata.alc_smb_tag, sc->alc_cdata.alc_smb_map,
4327 BUS_DMASYNC_PREREAD | BUS_DMASYNC_PREWRITE);
4331 alc_rxvlan(struct alc_softc *sc)
4337 reg = CSR_READ_4(sc, ALC_MAC_CFG);
4338 if ((ifp->if_capenable & IFCAP_VLAN_HWTAGGING) != 0)
4339 reg |= MAC_CFG_VLAN_TAG_STRIP;
4341 reg &= ~MAC_CFG_VLAN_TAG_STRIP;
4342 CSR_WRITE_4(sc, ALC_MAC_CFG, reg);
4346 alc_rxfilter(struct alc_softc *sc)
4349 struct ifmultiaddr *ifma;
4356 bzero(mchash, sizeof(mchash));
4357 rxcfg = CSR_READ_4(sc, ALC_MAC_CFG);
4358 rxcfg &= ~(MAC_CFG_ALLMULTI | MAC_CFG_BCAST | MAC_CFG_PROMISC);
4359 if ((ifp->if_flags & IFF_BROADCAST) != 0)
4360 rxcfg |= MAC_CFG_BCAST;
4361 if ((ifp->if_flags & (IFF_PROMISC | IFF_ALLMULTI)) != 0) {
4362 if ((ifp->if_flags & IFF_PROMISC) != 0)
4363 rxcfg |= MAC_CFG_PROMISC;
4364 if ((ifp->if_flags & IFF_ALLMULTI) != 0)
4365 rxcfg |= MAC_CFG_ALLMULTI;
4366 mchash[0] = 0xFFFFFFFF;
4367 mchash[1] = 0xFFFFFFFF;
4373 if_maddr_rlock(ifp);
4375 TAILQ_FOREACH(ifma, &sc->alc_ifp->if_multiaddrs, ifma_link) {
4376 if (ifma->ifma_addr->sa_family != AF_LINK)
4378 crc = ether_crc32_be(LLADDR((struct sockaddr_dl *)
4379 ifma->ifma_addr), ETHER_ADDR_LEN);
4380 mchash[crc >> 31] |= 1 << ((crc >> 26) & 0x1f);
4384 if_maddr_runlock(ifp);
4388 CSR_WRITE_4(sc, ALC_MAR0, mchash[0]);
4389 CSR_WRITE_4(sc, ALC_MAR1, mchash[1]);
4390 CSR_WRITE_4(sc, ALC_MAC_CFG, rxcfg);
4394 sysctl_hw_alc_proc_limit(SYSCTL_HANDLER_ARGS)
4396 return (sysctl_int_range(oidp, arg1, arg2, req,
4397 ALC_PROC_MIN, ALC_PROC_MAX));
4401 sysctl_hw_alc_int_mod(SYSCTL_HANDLER_ARGS)
4404 return (sysctl_int_range(oidp, arg1, arg2, req,
4405 ALC_IM_TIMER_MIN, ALC_IM_TIMER_MAX));